AI-generatedArecibo at a glance
- Best time
- Jun – Jul, Nov – Apr
- Warmest month
- Jun · 33°
- Warmest sea
- Sep · 29.2°
- Sunshine a year
- 2,830 h
- Rain a year
- 1,163 mm
- Climate
- Tropical
- Time zone
- UTC−4
- Elevation
- 7 m
Climate in Arecibo
Arecibo has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. June is the warmest month with average highs of 33 °C, while January is the coolest at 29 °C. With around 2,830 hours of sunshine a year, Arecibo is sunny; June is the sunniest month with 8.5 hours a day.
Holiday weather through the year
Best time to visit Arecibo
The best time to visit Arecibo is from June to July and from November to April. For a beach holiday – sea from 21 °C, warm and mostly dry – go from December to March. The rainy season is in May and from September to October; the wettest month is September with 162 mm.
Arecibo through the seasons
How the weather changes over the seasons, with averages for each.
Arecibo in the dry season
Jun – Aug, Nov – Apr
Excellent
- 29–33 °C by day
- Sea 28 °C
- 7.8 h of sun a day
- 122 rainy days in all
Arecibo in the rainy season
May, Sep – Oct
Good
- 32 °C by day
- Sea 29 °C
- 7.4 h of sun a day
- 62 rainy days in all
Which month for what?
Beach & swimming
Dec – Mar
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
May, Sep – Oct
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Arecibo for you.
Your best months: December – February
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: June – July, November – April
October is the peak of the hurricane season Hurricane season
Where to go in OctoberSea temperature in October
Keep in mindFrequent rainStorm season
A typical day in October
- Morning, 08:00: about 27°
- Midday, 13:00: about 32°
- Afternoon, 16:00: about 31°
- Evening, 20:00: about 28°
- Night, 23:00: about 26°
06:2018:05
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:06–06:49 · evening 17:36–18:18
- Blue hour
- Morning 05:58–06:06 · evening 18:18–18:27
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Arecibo compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 32° at the start of the month to 31° at the end. The days get 0.5 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 32° | 31° |
| Night-time low | 25° | 24° |
| Sea | 29° | 29° |
| Daylight | 12.0 h | 11.5 h |
What is the weather like in Arecibo in October?
In October, Arecibo is hot: daytime highs average 32 °C, and even at night it stays warm at around 24 °C. The sea averages 29.1 °C – almost as warm as a bath. The sun shines for around 7.0 hours a day. It is the rainy season: rain falls on about 22 days, totalling 147 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a good month for a holiday in Arecibo.
More details for October
- Daylight
- 11 h 45 min06:20 – 18:05
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 60 %on averageAll months
- Hot days
- 29 days30 °C or moreAll months
- Time zone
- UTC−4offset from UTC
How the score comes together
- Temperatureweight 35 %89 %
- Seaweight 25 %100 %
- Sunshineweight 20 %67 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Compare two months in Arecibo
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
February has the better holiday weather in Arecibo: score 88 against 69. In February, days are 2 °C cooler than in October. The sea is 3 °C cooler in February. February has 13 fewer rainy days. The sun shines an hour longer a day in February.
| Month | October | February |
|---|---|---|
| Holiday weather score | 69 | 88better |
| Daytime high | 32° | 30° |
| Night-time low | 24° | 22° |
| Sea | 29.1° | 26.4° |
| Sunshine | 7.0 h | 7.6 hbetter |
| Rainy days | 22 | 9better |
| Rainfall | 147 mm | 37 mmbetter |
| Muggy days | 31 | 24better |
Based on the climate averages 1996–2025.
Arecibo month by month
The typical weather for every month at a glance.
87January29° · Sea 27° · 7.5 h
In January, Arecibo is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 26.7 °C – lovely and warm for swimming. The sun shines for around 7.5 hours a day. Rain is frequent, with about 10 rainy days and 41 mm in total. On about 10 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is an excellent month for a holiday in Arecibo.
Arecibo in January88February30° · Sea 26° · 7.6 h
In February, Arecibo is hot: daytime highs average 30 °C, and even at night it stays warm at around 22 °C. The sea averages 26.4 °C – lovely and warm for swimming. The sun shines for around 7.6 hours a day. Rain falls on about 9 days, adding up to 37 mm. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is an excellent month for a holiday in Arecibo.
Arecibo in February87March30° · Sea 26° · 7.8 h
In March, Arecibo is hot: daytime highs average 30 °C, and even at night it stays warm at around 22 °C. The sea averages 26.4 °C – lovely and warm for swimming. The sun shines for around 7.8 hours a day. Rain is frequent, with about 10 rainy days and 58 mm in total. On about 18 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is an excellent month for a holiday in Arecibo.
Arecibo in March83April31° · Sea 27° · 8.3 h
In April, Arecibo is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. The sea averages 26.8 °C – lovely and warm for swimming. The sun shines for around 8.3 hours a day. It rains often – on about 14 days, adding up to 110 mm. On about 21 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is an excellent month for a holiday in Arecibo.
Arecibo in April74May32° · Sea 28° · 8.0 h
In May, Arecibo is hot: daytime highs average 32 °C, and even at night it stays warm at around 24 °C. The sea averages 27.5 °C – lovely and warm for swimming. The sun shines for around 8.0 hours a day. It is the rainy season: rain falls on about 18 days, totalling 160 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is a good month for a holiday in Arecibo.
Arecibo in May76June33° · Sea 28° · 8.5 h
In June, Arecibo is hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. The sea averages 28.2 °C – lovely and warm for swimming. The sun shines for around 8.5 hours a day. It rains often – on about 14 days, adding up to 95 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is a good month for a holiday in Arecibo.
Arecibo in June75July33° · Sea 28° · 8.5 h
In July, Arecibo is hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. The sea averages 28.4 °C – lovely and warm for swimming. The sun shines for around 8.5 hours a day. It rains often – on about 15 days, adding up to 79 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Arecibo.
Arecibo in July69August33° · Sea 29° · 8.0 h
In August, Arecibo is hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. The sea averages 28.8 °C – lovely and warm for swimming. The sun shines for around 8.0 hours a day. It rains often – on about 20 days, adding up to 108 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Arecibo.
Arecibo in August68September32° · Sea 29° · 7.2 h
In September, Arecibo is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun shines for around 7.2 hours a day. It is the rainy season: rain falls on about 23 days, totalling 162 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Arecibo.
Arecibo in September69October32° · Sea 29° · 7.0 h
In October, Arecibo is hot: daytime highs average 32 °C, and even at night it stays warm at around 24 °C. The sea averages 29.1 °C – almost as warm as a bath. The sun shines for around 7.0 hours a day. It is the rainy season: rain falls on about 22 days, totalling 147 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a good month for a holiday in Arecibo.
Arecibo in October74November30° · Sea 29° · 6.9 h
In November, Arecibo is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 28.5 °C – lovely and warm for swimming. The sun shines for around 6.9 hours a day. It rains often – on about 18 days, adding up to 117 mm. On about 19 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is a good month for a holiday in Arecibo.
Arecibo in November84December29° · Sea 28° · 7.5 h
In December, Arecibo is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. The sea averages 27.5 °C – lovely and warm for swimming. The sun shines for around 7.5 hours a day. Rain is frequent, with about 12 rainy days and 49 mm in total. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is an excellent month for a holiday in Arecibo.
Arecibo in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Arecibo
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Warm 20–24°
- Hot 24° and more
- muggy month (15+ muggy days)
HotOctober: nights around 24°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in February (22°), the warmest in August (25°). Nights stay tropical all year (20 °C and more), so a room with air conditioning or at least a fan pays off. It is muggy (dew point 18 °C or more) all year, on about 349 days a year.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 87 | 29° | 22° | 26.7° | 7.5 h | 10 | 41 |
| FebruaryFeb | 88 | 30° | 22° | 26.4° | 7.6 h | 9 | 37 |
| MarchMar | 87 | 30° | 22° | 26.4° | 7.8 h | 10 | 58 |
| AprilApr | 83 | 31° | 23° | 26.8° | 8.3 h | 14 | 110 |
| MayMay | 74 | 32° | 24° | 27.5° | 8.0 h | 18 | 160 |
| JuneJun | 76 | 33° | 25° | 28.2° | 8.5 h | 14 | 95 |
| JulyJul | 75 | 33° | 25° | 28.4° | 8.5 h | 15 | 79 |
| AugustAug | 69 | 33° | 25° | 28.8° | 8.0 h | 20 | 108 |
| SeptemberSep | 68 | 32° | 25° | 29.2° | 7.2 h | 23 | 162 |
| OctoberOct | 69 | 32° | 24° | 29.1° | 7.0 h | 22 | 147 |
| NovemberNov | 74 | 30° | 23° | 28.5° | 6.9 h | 18 | 117 |
| DecemberDec | 84 | 29° | 23° | 27.5° | 7.5 h | 12 | 49 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
18.47° N, 66.72° W · 7 m · America/Puerto_Rico
Sea temperature in Arecibo
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 28.5 – 29.6 °C
Swimming season: all year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Arecibo ranges from 26.4 °C in February to 29.2 °C in September. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea warms up slowly: it is warmest in September, while the air already peaks in June. The sea temperature varies from year to year: in September, eight out of ten years were between 28.7 and 29.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 26.7° | 26.2° | 27.2° | warm |
| FebruaryFeb | 26.4° | 25.8° | 27.0° | warm |
| MarchMar | 26.4° | 25.7° | 26.8° | warm |
| AprilApr | 26.8° | 26.2° | 27.4° | warm |
| MayMay | 27.5° | 26.8° | 28.2° | warm |
| JuneJun | 28.2° | 27.7° | 28.6° | warm |
| JulyJul | 28.4° | 28.0° | 28.9° | warm |
| AugustAug | 28.8° | 28.3° | 29.4° | warm |
| SeptemberSep | 29.2° | 28.7° | 29.7° | very warm |
| OctoberOct | 29.1° | 28.5° | 29.6° | very warm |
| NovemberNov | 28.5° | 28.0° | 29.0° | warm |
| DecemberDec | 27.5° | 26.9° | 28.1° | warm |
Sunshine hours in Arecibo
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 7.0 of 11.7 hours of daylight in Arecibo, 60 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Arecibo: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Arecibo has about 22 rainy days with 147 mm of rain in total.
UV index in Arecibo
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 10 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.
The sun is strongest in May (UV 13).
Minutes until sunburn in October
- Very fair skin
- about 15 min
- Fair skin
- about 15 min
- Light brown skin
- about 25 min
- Olive skin
- about 30 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Arecibo
How breezy and how cloudy Arecibo is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Arecibo typically peaks at 15 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Feb, Jul.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 60 % of the sky over Arecibo: variable cloud, with about 7.0 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Arecibo
How often the day gets hot in Arecibo (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Arecibo has about 29 hot days, with an average daytime high of 32 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Arecibo
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Arecibo in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Arecibo has its best school-holiday weather during the Christmas holidays (score 86) and its weakest during October half-term (score 69).
- 84
Easter holidays
Mar – Apr
Excellent
- 31 °C by day
- Sea 27 °C
- 8.2 h of sun a day
- 13 rainy days a month
- 74
May half-term
May – Jun
Good
- 32 °C by day
- Sea 28 °C
- 8.1 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain
- 71
Summer holidays
Jul – Aug
Good
- 33 °C by day
- Sea 29 °C
- 8.2 h of sun a day
- 18 rainy days a month
Keep in mind: Storm season
- 69
October half-term
Oct
Good
- 32 °C by day
- Sea 29 °C
- 7.0 h of sun a day
- 22 rainy days a month
Keep in mind: Frequent rain, Storm season
- 86
Christmas holidays
Dec – Jan
ExcellentBest holidays
- 29 °C by day
- Sea 27 °C
- 7.5 h of sun a day
- 11 rainy days a month
Good for: Beach & swimming
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 8 h 40 min
- Distance
- 6,780 km
- Time zone
- UTC−4
- Jet lag
- About 3 days (5 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Arecibo lies in an area that Atlantic hurricanes can reach. The hurricane season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Arecibo compared
Put Arecibo side by side with another destination.
Arecibo vs Vega Baja
In October the holiday weather in Arecibo and Vega Baja is about equally good (score 69 vs 70). During the day it is about as warm in Vega Baja as in Arecibo. The sea is about equally warm.
| in October | Arecibo | Vega Baja |
|---|---|---|
| Holiday weather score | 69 | 70 |
| Daytime high | 32° | 32° |
| Sea | 29° | 29° |
| Sunshine | 7 h | 7 h |
| Rainy days | 22 | 20 |
| Best time | Jun – Jul, Nov – Apr | Jun – Jul, Dec – Apr |
Through the year
Puerto Rico in October: the best places
In October, Arecibo ranks 6 of 9 destinations in this country.
- Culebra31°29°77
- 2Vieques30°29°76
- 3Ponce31°29°74
- 4Mayagüez31°29°74
- 5Vega Baja32°29°70
- 6AreciboThis page32°29°69
- 7Bayamón32°29°35
- 8Carolina32°35
Near Arecibo
Other destinations close by.
Places with a climate like Arecibo
Destinations whose weather through the year is closest to Arecibo's – good alternatives.
Frequently asked questions about Arecibo
When is the best time to visit Arecibo?
The best time to visit Arecibo is from June to July and from November to April. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Arecibo?
The sea temperature in Arecibo ranges from 26.4 °C in February to 29.2 °C in September. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Arecibo in October?
Yes. In October the sea averages 29.1 °C – almost as warm as a bath.
What is the warmest month in Arecibo?
June is the warmest month, with average highs of 33 °C and nights around 25 °C. January is the coolest month at 29 °C.
When does it rain most in Arecibo?
The rainy season is in May and from September to October; the wettest month is September with 162 mm. The driest month is February with 37 mm.
How many hours of sunshine does Arecibo get?
Arecibo gets around 2,830 hours of sunshine a year. The sunniest month is June with 8.5 hours a day; in November there are 6.9 hours a day.
What time zone is Arecibo in?
Arecibo is on UTC−4 all year.
How long is the flight from London to Arecibo?
A nonstop flight from London to Arecibo takes about 8 h 40 min, for a straight-line distance of about 6,780 km.
When is hurricane season in Arecibo?
Arecibo lies in an area that Atlantic hurricanes can reach. The hurricane season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Arecibo?
Arecibo has its best school-holiday weather during the Christmas holidays (score 86) and its weakest during October half-term (score 69). Holiday ratings (0–100): Easter holidays 84, May half-term 74, summer holidays 71, October half-term 69, Christmas holidays 86.