AI-generatedBarreiro at a glance
- Best time
- Jun – Sep
- Warmest month
- Aug · 28°
- Warmest sea
- Sep · 18.8°
- Sunshine a year
- 2,940 h
- Rain a year
- 538 mm
- Climate
- Mediterranean
- Time zone
- UTC+0 / UTC+1
- Elevation
- 7 m
Climate in Barreiro
Barreiro has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. August is the warmest month with average highs of 28 °C, while January is the coolest at 15 °C. With around 2,940 hours of sunshine a year, Barreiro is sunny; July is the sunniest month with 11.4 hours a day.
Holiday weather through the year
Best time to visit Barreiro
The best time to visit Barreiro is from June to September. The sea stays too cool for a classic beach holiday: even in September it only reaches 18.8 °C. For sightseeing, day trips and hiking, conditions are most comfortable all year round except in August. The wettest month is November with 77 mm of precipitation.
Barreiro through the seasons
How the weather changes over the seasons, with averages for each.
Barreiro in spring
Mar – May
Fair
- 18–23 °C by day
- Sea 16 °C
- 8.6 h of sun a day
- 24 rainy days in all
Barreiro in summer
Jun – Aug
Good
- 25–28 °C by day
- Sea 18 °C
- 11.2 h of sun a day
- 4 rainy days in all
Barreiro in autumn
Sep – Nov
Fair
- 18–26 °C by day
- Sea 18 °C
- 7.1 h of sun a day
- 23 rainy days in all
Barreiro in winter
Dec – Feb
Poor
- 15–16 °C by day
- Sea 15 °C
- 5.3 h of sun a day
- 25 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
All year except Aug
15–28 °C and not too much rain
Find your perfect month
Tell us what you like and we rate every month in Barreiro for you.
Your best months: July – September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: June – September
Where to go in OctoberSea temperature in October
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 16°
- Midday, 13:00: about 22°
- Afternoon, 16:00: about 23°
- Evening, 20:00: about 20°
- Night, 23:00: about 18°
07:4419:00
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:28–08:20 · evening 18:24–19:16
- Blue hour
- Morning 07:17–07:28 · evening 19:16–19:26
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 Barreiro compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 24° at the start of the month to 21° at the end. The sea cools from 19° to 18°. The days get 1.2 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 24° | 21° |
| Night-time low | 16° | 14° |
| Sea | 19° | 18° |
| Daylight | 11.8 h | 10.7 h |
What is the weather like in Barreiro in October?
In October, Barreiro is warm: daytime highs average 23 °C, and nights cool down to about 16 °C. The sea averages 18.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 6.7 hours a day. Rain falls on about 9 days, adding up to 73 mm. All in all, October is a so-so month for a holiday in Barreiro.
More details for October
- Daylight
- 11 h 16 min07:44 – 19:00
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 52 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC+1offset from UTC
How the score comes together
- Temperatureweight 35 %65 %
- Seaweight 25 %21 %
- Sunshineweight 20 %62 %
- Few rainy daysweight 20 %65 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Wetsuit for longer swims
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Barreiro
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
August has the better holiday weather in Barreiro: score 81 against 53. In August, days are 5 °C warmer than in October. The sea is about as warm in both months. August has 8 fewer rainy days. The sun shines 4 hours longer a day in August.
| Month | October | August |
|---|---|---|
| Holiday weather score | 53 | 81better |
| Daytime high | 23° | 28° |
| Night-time low | 16° | 18° |
| Sea | 18.5° | 18.6° |
| Sunshine | 6.7 h | 11.0 hbetter |
| Rainy days | 9 | 1better |
| Rainfall | 73 mm | 4 mmbetter |
| Muggy days | 2better | 4 |
Based on the climate averages 1996–2025.
Barreiro month by month
The typical weather for every month at a glance.
21January15° · Sea 15° · 5.2 h
In January, Barreiro is cool: daytime highs average 15 °C, and nights cool down to about 9 °C. The sea averages 15.4 °C – swimming is only for the hardy. Expect around 5.2 hours of sunshine a day. Rain falls on about 9 days, adding up to 64 mm. All in all, January is not an ideal month for a holiday in Barreiro.
Barreiro in January26February16° · Sea 15° · 6.1 h
In February, Barreiro is cool: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 14.8 °C – swimming is only for the hardy. Expect around 6.1 hours of sunshine a day. Rain falls on about 7 days, adding up to 48 mm. All in all, February is not an ideal month for a holiday in Barreiro.
Barreiro in February28March18° · Sea 15° · 7.5 h
In March, Barreiro is mild: daytime highs average 18 °C, and nights cool down to about 11 °C. The sea averages 14.9 °C – swimming is only for the hardy. The sun shines for around 7.5 hours a day. Rain falls on about 9 days, adding up to 61 mm. All in all, March is not an ideal month for a holiday in Barreiro.
Barreiro in March37April20° · Sea 16° · 8.5 h
In April, Barreiro is mild: daytime highs average 20 °C, and nights cool down to about 13 °C. The sea averages 15.7 °C – swimming is only for the hardy. The sun shines for around 8.5 hours a day. Rain is frequent, with about 9 rainy days and 52 mm in total. All in all, April is not an ideal month for a holiday in Barreiro.
Barreiro in April59May23° · Sea 17° · 9.8 h
In May, Barreiro is warm: daytime highs average 23 °C, and nights cool down to about 15 °C. The sea averages 16.5 °C – swimming is only for the hardy. With around 9.8 hours of sunshine a day, there is plenty of sun. Rain falls on about 6 days, adding up to 38 mm. All in all, May is a so-so month for a holiday in Barreiro.
Barreiro in May78June25° · Sea 18° · 11.1 h
In June, Barreiro is warm: daytime highs average 25 °C, and nights cool down to about 17 °C. The sea averages 17.8 °C – bracing, so a wetsuit helps for longer swims. With around 11.1 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 11 mm in total. All in all, June is a good month for a holiday in Barreiro.
Barreiro in June79July28° · Sea 18° · 11.4 h
In July, Barreiro is hot: daytime highs average 28 °C, and nights cool down to about 18 °C. The sea averages 18.2 °C – bracing, so a wetsuit helps for longer swims. With around 11.4 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 7 days the thermometer climbs to 30 °C or more. All in all, July is a good month for a holiday in Barreiro.
Barreiro in July81August28° · Sea 19° · 11.0 h
In August, Barreiro is hot: daytime highs average 28 °C, and nights cool down to about 18 °C. The sea averages 18.6 °C – bracing, so a wetsuit helps for longer swims. With around 11.0 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 8 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Barreiro.
Barreiro in August81September26° · Sea 19° · 9.1 h
In September, Barreiro is warm: daytime highs average 26 °C, and nights cool down to about 17 °C. The sea averages 18.8 °C – bracing, so a wetsuit helps for longer swims. With around 9.1 hours of sunshine a day, there is plenty of sun. Rain is rare: about 5 days bring 31 mm in total. All in all, September is an excellent month for a holiday in Barreiro.
Barreiro in September53October23° · Sea 19° · 6.7 h
In October, Barreiro is warm: daytime highs average 23 °C, and nights cool down to about 16 °C. The sea averages 18.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 6.7 hours a day. Rain falls on about 9 days, adding up to 73 mm. All in all, October is a so-so month for a holiday in Barreiro.
Barreiro in October21November18° · Sea 17° · 5.4 h
In November, Barreiro is mild: daytime highs average 18 °C, and nights cool down to about 12 °C. The sea averages 17.3 °C – bracing, so a wetsuit helps for longer swims. Expect around 5.4 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 77 mm in total. All in all, November is not an ideal month for a holiday in Barreiro.
Barreiro in November18December16° · Sea 16° · 4.7 h
In December, Barreiro is cool: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 16.1 °C – swimming is only for the hardy. Expect around 4.7 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 77 mm in total. All in all, December is not an ideal month for a holiday in Barreiro.
Barreiro in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Barreiro
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cool 8–15°
- Pleasant 15–20°
PleasantOctober: nights around 16°. Ideal for sleeping, often with the window open. Muggy on about 2 days (dew point 18 °C or more).
The coolest nights are in January (9°), the warmest in August (18°). Nights are pleasant for sleeping (15 to 20 °C) from May to October.
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 | 21 | 15° | 9° | 15.4° | 5.2 h | 9 | 64 |
| FebruaryFeb | 26 | 16° | 10° | 14.8° | 6.1 h | 7 | 48 |
| MarchMar | 28 | 18° | 11° | 14.9° | 7.5 h | 9 | 61 |
| AprilApr | 37 | 20° | 13° | 15.7° | 8.5 h | 9 | 52 |
| MayMay | 59 | 23° | 15° | 16.5° | 9.8 h | 6 | 38 |
| JuneJun | 78 | 25° | 17° | 17.8° | 11.1 h | 3 | 11 |
| JulyJul | 79 | 28° | 18° | 18.2° | 11.4 h | 1 | 2 |
| AugustAug | 81 | 28° | 18° | 18.6° | 11.0 h | 1 | 4 |
| SeptemberSep | 81 | 26° | 17° | 18.8° | 9.1 h | 5 | 31 |
| OctoberOct | 53 | 23° | 16° | 18.5° | 6.7 h | 9 | 73 |
| NovemberNov | 21 | 18° | 12° | 17.3° | 5.4 h | 9 | 77 |
| DecemberDec | 18 | 16° | 10° | 16.1° | 4.7 h | 9 | 77 |
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
38.66° N, 9.07° W · 7 m · Europe/Lisbon
Sea temperature in Barreiro
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 17.3 – 19.5 °C
Swimming season: Always below 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Barreiro ranges from 14.8 °C in February to 18.8 °C in September. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
The sea warms up slowly: it is warmest in September, while the air already peaks in August. From December to January the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in September, eight out of ten years were between 18.0 and 19.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 15.4° | 14.8° | 16.2° | cold |
| FebruaryFeb | 14.8° | 13.9° | 15.5° | cold |
| MarchMar | 14.9° | 14.1° | 15.5° | cold |
| AprilApr | 15.7° | 14.9° | 16.8° | cold |
| MayMay | 16.5° | 15.5° | 17.4° | cold |
| JuneJun | 17.8° | 17.1° | 18.6° | fresh |
| JulyJul | 18.2° | 17.7° | 18.9° | fresh |
| AugustAug | 18.6° | 17.8° | 19.6° | fresh |
| SeptemberSep | 18.8° | 18.0° | 19.7° | fresh |
| OctoberOct | 18.5° | 17.3° | 19.5° | fresh |
| NovemberNov | 17.3° | 16.1° | 18.4° | fresh |
| DecemberDec | 16.1° | 15.4° | 16.8° | cold |
Sunshine hours in Barreiro
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 6.7 of 11.3 hours of daylight in Barreiro, 59 % 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 Barreiro: 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, Barreiro has about 9 rainy days with 73 mm of rain in total.
UV index in Barreiro
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 4 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 10).
Minutes until sunburn in October
- Very fair skin
- about 30 min
- Fair skin
- about 40 min
- Light brown skin
- about 55 min
- Olive skin
- about 70 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 Barreiro
How breezy and how cloudy Barreiro 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 Barreiro typically peaks at 18 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: May – Aug.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 52 % of the sky over Barreiro: variable cloud, with about 6.7 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 Barreiro
How often the day gets hot in Barreiro (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, Barreiro has about 1 hot day, with an average daytime high of 23 °C: pleasant. Heat plays no part this month.
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 Barreiro
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Barreiro 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.
Barreiro has its best school-holiday weather during the summer holidays (score 80) and its weakest during the Christmas holidays (score 20).
- 34
Easter holidays
Mar – Apr
Poor
- 19 °C by day
- Sea 15 °C
- 8.2 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
- 63
May half-term
May – Jun
Good
- 23 °C by day
- Sea 17 °C
- 10.1 h of sun a day
- 5 rainy days a month
Good for: Sightseeing & walks
- 80
Summer holidays
Jul – Aug
ExcellentBest holidays
- 28 °C by day
- Sea 18 °C
- 11.1 h of sun a day
- 1 rainy day a month
- 53
October half-term
Oct
Fair
- 23 °C by day
- Sea 19 °C
- 6.7 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
- 20
Christmas holidays
Dec – Jan
Poor
- 15 °C by day
- Sea 16 °C
- 5.0 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 2 h 25 min
- Distance
- 1,570 km
- Time zone
- UTC+1
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Barreiro compared
Put Barreiro side by side with another destination.
Barreiro vs Almada
In October the holiday weather in Barreiro and Almada is about equally good (score 53 vs 52). During the day it is about as warm in Almada as in Barreiro. The sea is about equally warm.
| in October | Barreiro | Almada |
|---|---|---|
| Holiday weather score | 53 | 52 |
| Daytime high | 23° | 23° |
| Sea | 19° | 19° |
| Sunshine | 7 h | 7 h |
| Rainy days | 9 | 9 |
| Best time | Jun – Sep | Jun – Sep |
Through the year
Portugal in October: the best places
In October, Barreiro ranks 21 among the 31 nearest destinations in this country.
- Silves25°86
- 2Beja24°84
- 3Évora24°83
- 4Lisbon22°19°82
- 5Amadora22°19°82
- 6Sintra21°82
- 7Tomar24°82
- 8Mafra21°80
- 21BarreiroThis page23°19°53
Near Barreiro
Other destinations close by.
Places with a climate like Barreiro
Destinations whose weather through the year is closest to Barreiro's – good alternatives.
Frequently asked questions about Barreiro
When is the best time to visit Barreiro?
The best time to visit Barreiro is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Barreiro?
The sea temperature in Barreiro ranges from 14.8 °C in February to 18.8 °C in September. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Barreiro in October?
Only if you don't mind cold water: in October the sea averages just 18.5 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Barreiro?
August is the warmest month, with average highs of 28 °C and nights around 18 °C. January is the coolest month at 15 °C.
When does it rain most in Barreiro?
The wettest month is November with 77 mm of precipitation. The driest month is July with 2 mm.
How many hours of sunshine does Barreiro get?
Barreiro gets around 2,940 hours of sunshine a year. The sunniest month is July with 11.4 hours a day; in December there are 4.7 hours a day.
What time zone is Barreiro in?
Barreiro is on UTC+0 in January and UTC+1 in July.
How long is the flight from London to Barreiro?
A nonstop flight from London to Barreiro takes about 2 h 25 min, for a straight-line distance of about 1,570 km.
Which school holidays are best for Barreiro?
Barreiro has its best school-holiday weather during the summer holidays (score 80) and its weakest during the Christmas holidays (score 20). Holiday ratings (0–100): Easter holidays 34, May half-term 63, summer holidays 80, October half-term 53, Christmas holidays 20.