Mosteirô, Portugal experiences average highs of 20°C (68°F) and lows of 12°C (54°F) throughout the year. Rainfall is moderate, averaging about 10 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. Average highs have stayed broadly stable across the available records.
Mosteirô, Portugal Weather & Climate 2026
Monthly climate averages for Mosteirô, Portugal. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Sep 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.3/10
Best: June, July, August, September
UV Index
5
Low
Temperature 20°C / 12°C
Feels Like 19°C / 10°C
Rainy Days 10
Rainfall 112 mm
Sunshine 10 h
Humidity 78%
Wind Speed 18 km/h
Dew Point 12°C
Frost Days 1 days
Hottest Month
28°C
August
Avg Low17°C
Rain2days
Coldest Month
6°C
January
Avg High13°C
Rain12days
Driest Month
2days
August
Avg High28°C
Avg Low17°C
Windiest Month
19 km/h
March (Gusts 41)
Sea Temperature
14°C – 20°C
Warmest water: July (
19.8°C
)
Worst Time to Visit
Consider avoiding January, March, December due to frequent rain.
Sun Position
Sunrise 06:03
Daylight 15.1h
Sunset 21:09
Live conditions—
Mosteirô on the map · live conditions
Mosteirô, Portugal
- Continent
- Europe
- Country
- Portugal
- City
- Mosteirô
- Population
- 2K
- Coordinates
- 40.90°, -8.53°
Seasonal Breakdown
Spring
Mar–May
Avg High 18°C
Avg Low 10°C
Rain 13 days/mo
Summer
Jun–Aug
Avg High 26°C
Avg Low 16°C
Rain 5 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 21°C
Avg Low 13°C
Rain 12 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 14°C
Avg Low 7°C
Rain 12 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 13°C / 6°C . Feb: 15°C / 7°C . Mar: 16°C / 8°C . Apr: 18°C / 10°C . May: 21°C / 12°C . Jun: 23°C / 15°C . Jul: 27°C / 17°C . Aug: 28°C / 17°C . Sep: 25°C / 16°C . Oct: 22°C / 14°C . Nov: 16°C / 10°C . Dec: 14°C / 8°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 161 mm. Feb: 120 mm. Mar: 146 mm. Apr: 145 mm. May: 88 mm. Jun: 60 mm. Jul: 15 mm. Aug: 11 mm. Sep: 64 mm. Oct: 179 mm. Nov: 187 mm. Dec: 171 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 82%. Feb: 79%. Mar: 79%. Apr: 77%. May: 76%. Jun: 78%. Jul: 71%. Aug: 70%. Sep: 73%. Oct: 78%. Nov: 83%. Dec: 84%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 18 km/h . Feb: 18 km/h . Mar: 19 km/h . Apr: 18 km/h . May: 18 km/h . Jun: 17 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 17 km/h . Oct: 17 km/h . Nov: 18 km/h . Dec: 18 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 8h. Mar: 9h. Apr: 11h. May: 12h. Jun: 13h. Jul: 13h. Aug: 12h. Sep: 11h. Oct: 8h. Nov: 7h. Dec: 6h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 14°C . Feb: 14°C . Mar: 15°C . Apr: 17°C . May: 17°C . Jun: 20°C . Jul: 20°C . Aug: 20°C . Sep: 18°C . Oct: 19°C . Nov: 17°C . Dec: 15°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 14 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 29°C | Aug · 28°C |
| Coldest month | Dec 2025 · 7°C | Jan · 6°C |
| Wettest month | Nov 2025 · 360 mm | Nov · 187 mm |
| Windiest month | Jan 2025 · 21 km/h | Mar · 19 km/h |
Month-by-Month Weather Table
January
Fair 
February
Fair March
Fair April
Good May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Wet December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 13°C / 6°C | 11°C / 3°C | 12days (161 mm) Wet | 6.4h Fair | 82% Humid | 2.3 Moderate | Fair | View Details |
| February | 15°C / 7°C | 13°C / 4°C | 10days (120 mm) Wet | 7.7h Good | 79% Humid | 3.3 Moderate | Fair | View Details |
| March | 16°C / 8°C | 14°C / 5°C | 14days (146 mm) Wet | 9.1h Good | 79% Humid | 4.6 Moderate | Fair | View Details |
| April | 18°C / 10°C | 18°C / 8°C | 13days (145 mm) Wet | 10.6h Excellent | 77% Humid | 6.2 High | Good | View Details |
| May | 21°C / 12°C | 21°C / 11°C | 11days (88 mm) Wet | 11.9h Excellent | 76% Humid | 6.9 High | Good | View Details |
| June best | 23°C / 15°C | 25°C / 15°C | 9days (60 mm) Wet | 12.7h Excellent | 78% Humid | 7.5 Very High | Excellent | View Details |
| July best | 27°C / 17°C | 29°C / 18°C | 3days (15 mm) Excellent | 13.1h Excellent | 71% Muggy | 7.7 Very High | Excellent | View Details |
| August best | 28°C / 17°C | 29°C / 18°C | 2days (11 mm) Excellent | 12.3h Excellent | 70% Muggy | 7.2 Very High | Excellent | View Details |
| September best | 25°C / 16°C | 25°C / 15°C | 8days (64 mm) Wet | 10.5h Excellent | 73% Muggy | 5.7 High | Excellent | View Details |
| October | 22°C / 14°C | 21°C / 13°C | 13days (179 mm) Wet | 8.2h Good | 78% Humid | 3.7 Moderate | Good | View Details |
| November | 16°C / 10°C | 15°C / 8°C | 14days (187 mm) Wet | 6.8h Fair | 83% Humid | 2.7 Moderate | Wet | View Details |
| December | 14°C / 8°C | 12°C / 5°C | 13days (171 mm) Wet | 6.2h Fair | 84% Humid | 2.2 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Mosteirô are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Mosteirô, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Mosteirô is August, with average daytime highs of 28°C (82°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Mosteirô is January, with average overnight lows of 6°C (43°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Mosteirô is November, averaging 187mm of precipitation across 14 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Mosteirô runs through March, November, April, October, with the heaviest rainfall in March. Based on 10-year averages for Mosteirô.
Mosteirô receives approximately 116 sunshine hours per year. The sunniest month is July with around 13 hours. Based on climate data for Mosteirô.
The least favorable months to visit Mosteirô are January, March, December, primarily due to frequent rain. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Mosteirô is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Mosteirô is 78%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Sea temperatures in Summer average 17°C (63°F), which most swimmers will find too cold without a wetsuit.
Mosteirô rarely sees significant snowfall but does experience frost, averaging 1 frost days during the colder months.
Average wind speeds in Mosteirô are 18 km/h (11 mph). The windiest month is March with peak winds reaching 19 km/h (12 mph) (gusts up to 41 km/h / 26 mph).
Mosteirô averages 6 clear-sky days per month with overall cloud cover around 54%. The clearest skies occur in July.
The annual average dew point in Mosteirô is 12°C (54°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Mosteirô has a Hot-Summer Mediterranean climate, classified as Csa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Mosteirô ranges from 10°C (50°F) to 19°C (66°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Mosteirô. It earns a climate score of 8.9/10 with Excellent.
For June in Mosteirô, pack Umbrella, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 23°C (74°F) and 9 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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