AI-generatedPorto Velho at a glance
- Best time
- Jun – Jul
- Warmest month
- Aug · 35°
- Sunshine a year
- 1,950 h
- Rain a year
- 2,207 mm
- Climate
- Tropical
- Time zone
- UTC−4
- Elevation
- 90 m
Climate in Porto Velho
Porto Velho has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. August is the warmest month with average highs of 35 °C, while February is the coolest at 31 °C. With around 1,950 hours of sunshine a year, Porto Velho is moderately sunny; July is the sunniest month with 7.7 hours a day.
Holiday weather through the year
Best time to visit Porto Velho
The best time to visit Porto Velho is from June to July. From July to October it can get very hot, with highs of up to 35 °C. The rainy season is from November to April; the wettest month is March with 335 mm.
Porto Velho through the seasons
How the weather changes over the seasons, with averages for each.
Porto Velho in the dry season
May – Oct
Poor
- 31–35 °C by day
- 6.6 h of sun a day
- 76 rainy days in all
Porto Velho in the rainy season
Nov – Apr
Poor
- 31–32 °C by day
- 4.1 h of sun a day
- 164 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Peak heat
Jul – Oct
Highs of 33 °C or more
Rainy months
Nov – Apr
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Porto Velho for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: June – July
Keep in mindPeak heat
A typical day in October
- Morning, 08:00: about 27°
- Midday, 13:00: about 33°
- Afternoon, 16:00: about 32°
- Evening, 20:00: about 28°
- Night, 23:00: about 26°
05:5318:10
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 05:40–06:21 · evening 17:42–18:23
- Blue hour
- Morning 05:32–05:40 · evening 18:23–18:31
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 Porto Velho compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 34° at the start of the month to 32° at the end. The days get 0.2 h longer.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 34° | 32° |
| Night-time low | 23° | 23° |
| Daylight | 12.2 h | 12.4 h |
What is the weather like in Porto Velho in October?
In October, Porto Velho is very hot: daytime highs average 33 °C, and even at night it stays warm at around 23 °C. Expect around 5.9 hours of sunshine a day. It rains often – on about 22 days, adding up to 171 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 not an ideal month for a holiday in Porto Velho.
More details for October
- Daylight
- 12 h 17 min05:53 – 18:10
- UV index
- 14 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 8 km/haverage daily peakAll months
- Cloud cover
- 78 %on averageAll months
- Hot days
- 29 days30 °C or moreAll months
- Time zone
- UTC−4offset from UTC
How the score comes together
- Temperatureweight 50 %21 %
- Sunshineweight 20 %48 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Compare two months in Porto Velho
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Porto Velho: score 55 against 20. In June, days are 1 °C cooler than in October. June has 14 fewer rainy days. The sun shines an hour longer a day in June.
| Month | October | June |
|---|---|---|
| Holiday weather score | 20 | 55better |
| Daytime high | 33° | 32° |
| Night-time low | 23° | 22° |
| Sunshine | 5.9 h | 6.7 hbetter |
| Rainy days | 22 | 8better |
| Rainfall | 171 mm | 36 mmbetter |
| Muggy days | 31 | 29better |
Based on the climate averages 1996–2025.
Porto Velho month by month
The typical weather for every month at a glance.
31January31° · 4.1 h
In January, Porto Velho is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. Expect around 4.1 hours of sunshine a day. It is the rainy season: rain falls on about 28 days, totalling 302 mm. On about 20 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is not an ideal month for a holiday in Porto Velho.
Porto Velho in January30February31° · 3.7 h
In February, Porto Velho is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. The sun is scarce, with only about 3.7 hours a day. It is the rainy season: rain falls on about 27 days, totalling 317 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is not an ideal month for a holiday in Porto Velho.
Porto Velho in February29March31° · 3.6 h
In March, Porto Velho is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. The sun is scarce, with only about 3.6 hours a day. It is the rainy season: rain falls on about 29 days, totalling 335 mm. On about 20 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is not an ideal month for a holiday in Porto Velho.
Porto Velho in March29April31° · 4.2 h
In April, Porto Velho is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. Expect around 4.2 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 232 mm. On about 22 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is not an ideal month for a holiday in Porto Velho.
Porto Velho in April33May31° · 5.1 h
In May, Porto Velho is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. Expect around 5.1 hours of sunshine a day. It rains often – on about 20 days, adding up to 123 mm. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is not an ideal month for a holiday in Porto Velho.
Porto Velho in May55June32° · 6.7 h
In June, Porto Velho is hot: daytime highs average 32 °C, and even at night it stays warm at around 22 °C. The sun shines for around 6.7 hours a day. Rain falls on about 8 days, adding up to 36 mm. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is a so-so month for a holiday in Porto Velho – and yet one of the best months here.
Porto Velho in June55July34° · 7.7 h
In July, Porto Velho is very hot: daytime highs average 34 °C, and even at night it stays warm at around 22 °C. The sun shines for around 7.7 hours a day. Rain is rare: about 4 days bring 17 mm in total. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Porto Velho – and yet one of the best months here.
Porto Velho in July38August35° · 7.4 h
In August, Porto Velho is very hot: daytime highs average 35 °C, and even at night it stays warm at around 22 °C. The sun shines for around 7.4 hours a day. Rain falls on about 7 days, adding up to 40 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 not an ideal month for a holiday in Porto Velho.
Porto Velho in August23September35° · 7.0 h
In September, Porto Velho is very hot: daytime highs average 35 °C, and even at night it stays warm at around 23 °C. The sun shines for around 7.0 hours a day. It rains often – on about 15 days, adding up to 89 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 not an ideal month for a holiday in Porto Velho.
Porto Velho in September20October33° · 5.9 h
In October, Porto Velho is very hot: daytime highs average 33 °C, and even at night it stays warm at around 23 °C. Expect around 5.9 hours of sunshine a day. It rains often – on about 22 days, adding up to 171 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 not an ideal month for a holiday in Porto Velho.
Porto Velho in October26November32° · 4.5 h
In November, Porto Velho is hot: daytime highs average 32 °C, and even at night it stays warm at around 23 °C. Expect around 4.5 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 240 mm. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is not an ideal month for a holiday in Porto Velho.
Porto Velho in November30December31° · 4.2 h
In December, Porto Velho is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. Expect around 4.2 hours of sunshine a day. It is the rainy season: rain falls on about 28 days, totalling 305 mm. On about 21 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is not an ideal month for a holiday in Porto Velho.
Porto Velho in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Porto Velho
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Warm 20–24°
- muggy month (15+ muggy days)
WarmOctober: nights around 23°. Tropical nights: a fan or air conditioning helps. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in July (22°), the warmest in March (23°). 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 351 days a year.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 31 | 31° | 23° | 4.1 h | 28 | 302 |
| FebruaryFeb | 30 | 31° | 23° | 3.7 h | 27 | 317 |
| MarchMar | 29 | 31° | 23° | 3.6 h | 29 | 335 |
| AprilApr | 29 | 31° | 23° | 4.2 h | 26 | 232 |
| MayMay | 33 | 31° | 23° | 5.1 h | 20 | 123 |
| JuneJun | 55 | 32° | 22° | 6.7 h | 8 | 36 |
| JulyJul | 55 | 34° | 22° | 7.7 h | 4 | 17 |
| AugustAug | 38 | 35° | 22° | 7.4 h | 7 | 40 |
| SeptemberSep | 23 | 35° | 23° | 7.0 h | 15 | 89 |
| OctoberOct | 20 | 33° | 23° | 5.9 h | 22 | 171 |
| NovemberNov | 26 | 32° | 23° | 4.5 h | 25 | 240 |
| DecemberDec | 30 | 31° | 23° | 4.2 h | 28 | 305 |
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
8.76° S, 63.90° W · 90 m · America/Porto_Velho
Sunshine hours in Porto Velho
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 5.9 of 12.3 hours of daylight in Porto Velho, 48 % 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 Porto Velho: 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, Porto Velho has about 22 rainy days with 171 mm of rain in total.
UV index in Porto Velho
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 14 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in October (UV 14).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 10 min
- Light brown skin
- about 15 min
- Olive skin
- about 20 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 Porto Velho
How breezy and how cloudy Porto Velho 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 Porto Velho typically peaks at 8 km/h during the day: Beaufort 2, light breeze or less.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 78 % of the sky over Porto Velho: mostly cloudy, with about 5.9 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 Porto Velho
How often the day gets hot in Porto Velho (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, Porto Velho has about 29 hot days, with an average daytime high of 33 °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 Porto Velho
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Porto Velho 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.
Porto Velho has its best school-holiday weather during the summer holidays (score 44) and its weakest during October half-term (score 20).
- 29
Easter holidays
Mar – Apr
Poor
- 31 °C by day
- 4.0 h of sun a day
- 27 rainy days a month
Keep in mind: Frequent rain
- 37
May half-term
May – Jun
Poor
- 31 °C by day
- 5.4 h of sun a day
- 17 rainy days a month
- 44
Summer holidays
Jul – Aug
FairBest holidays
- 34 °C by day
- 7.5 h of sun a day
- 6 rainy days a month
Keep in mind: Peak heat
- 20
October half-term
Oct
Poor
- 33 °C by day
- 5.9 h of sun a day
- 22 rainy days a month
Keep in mind: Peak heat
- 31
Christmas holidays
Dec – Jan
Poor
- 31 °C by day
- 4.2 h of sun a day
- 28 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 20 min
- Distance
- 9,010 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.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Porto Velho compared
Put Porto Velho side by side with another destination.
Porto Velho vs Puerto Maldonado
In October Puerto Maldonado has the better holiday weather (score 27 vs 20). During the day Puerto Maldonado is 1 °C cooler than Porto Velho.
| in October | Porto Velho | Puerto Maldonado |
|---|---|---|
| Holiday weather score | 20 | 27 |
| Daytime high | 33° | 32° |
| Sunshine | 6 h | 6 h |
| Rainy days | 22 | 20 |
| Best time | Jun – Jul | Jun – Jul |
Through the year
Brazil in October: the best places
In October, Porto Velho ranks 30 among the 31 nearest destinations in this country.
- São Paulo26°65
- 2Belo Horizonte29°65
- 3São Luís32°28°63
- 4Mogi das Cruzes26°63
- 5Ouro Preto25°63
- 6Treze Tílias24°62
- 7Bertioga27°23°62
- 8Paraty25°23°62
- 30Porto VelhoThis page33°20
Near Porto Velho
Other destinations close by.
Places with a climate like Porto Velho
Destinations whose weather through the year is closest to Porto Velho's – good alternatives.
Frequently asked questions about Porto Velho
When is the best time to visit Porto Velho?
The best time to visit Porto Velho is from June to July. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Porto Velho?
August is the warmest month, with average highs of 35 °C and nights around 22 °C. February is the coolest month at 31 °C.
When does it rain most in Porto Velho?
The rainy season is from November to April; the wettest month is March with 335 mm. The driest month is July with 17 mm.
How many hours of sunshine does Porto Velho get?
Porto Velho gets around 1,950 hours of sunshine a year. The sunniest month is July with 7.7 hours a day; in March there are 3.6 hours a day.
What time zone is Porto Velho in?
Porto Velho is on UTC−4 all year.
How long is the flight from London to Porto Velho?
A nonstop flight from London to Porto Velho takes about 11 h 20 min, for a straight-line distance of about 9,010 km. Most routes need a change of planes, which adds time.
Which school holidays are best for Porto Velho?
Porto Velho has its best school-holiday weather during the summer holidays (score 44) and its weakest during October half-term (score 20). Holiday ratings (0–100): Easter holidays 29, May half-term 37, summer holidays 44, October half-term 20, Christmas holidays 31.