Samil, Portugal experiences average highs of 18°C (64°F) and lows of 8°C (46°F) throughout the year. Rainfall is moderate, averaging about 9 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have warmed by 0.8°C (1.4°F) across the available records.
Samil, Portugal Weather & Climate 2026
Monthly climate averages for Samil, Portugal. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Sep 
Wetter season: Mar–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.4/10
Best: June, July, August, September
UV Index
5
Low
Temperature 18°C / 8°C
Feels Like 16°C / 6°C
Rainy Days 9
Rainfall 74 mm
Sunshine 9 h
Humidity 71%
Wind Speed 15 km/h
Dew Point 8°C
Snow Days 2 days
Frost Days 6 days
Hottest Month
29°C
August
Avg Low16°C
Rain2days
Coldest Month
1°C
January
Avg High9°C
Rain9days
Driest Month
2days
August
Avg High29°C
Avg Low16°C
Windiest Month
17 km/h
March (Gusts 41)
Worst Time to Visit
Consider avoiding January, February, March, December due to frequent rain.
Sun Position
Sunrise 05:53
Daylight 15.2h
Sunset 21:05
Live conditions—
Samil on the map · live conditions
Samil, Portugal
- Continent
- Europe
- Country
- Portugal
- City
- Samil
- Population
- 1.2K
- Coordinates
- 41.78°, -6.76°
Seasonal Breakdown
Spring
Mar–May
Avg High 16°C
Avg Low 6°C
Rain 11 days/mo
Summer
Jun–Aug
Avg High 27°C
Avg Low 15°C
Rain 4 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 18°C
Avg Low 9°C
Rain 10 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 10°C
Avg Low 2°C
Rain 10 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: 9°C / 1°C . Feb: 11°C / 2°C . Mar: 13°C / 3°C . Apr: 16°C / 5°C . May: 20°C / 9°C . Jun: 24°C / 13°C . Jul: 29°C / 16°C . Aug: 29°C / 16°C . Sep: 24°C / 12°C . Oct: 19°C / 10°C . Nov: 12°C / 5°C . Dec: 10°C / 3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 99 mm. Feb: 74 mm. Mar: 105 mm. Apr: 92 mm. May: 56 mm. Jun: 52 mm. Jul: 10 mm. Aug: 9 mm. Sep: 50 mm. Oct: 112 mm. Nov: 115 mm. Dec: 108 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 84%. Feb: 80%. Mar: 77%. Apr: 72%. May: 67%. Jun: 65%. Jul: 53%. Aug: 51%. Sep: 63%. Oct: 72%. Nov: 84%. Dec: 87%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 14 km/h . Feb: 15 km/h . Mar: 17 km/h . Apr: 16 km/h . May: 15 km/h . Jun: 15 km/h . Jul: 15 km/h . Aug: 15 km/h . Sep: 15 km/h . Oct: 15 km/h . Nov: 15 km/h . Dec: 14 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 7h. Mar: 9h. Apr: 10h. May: 12h. Jun: 13h. Jul: 14h. Aug: 13h. Sep: 10h. Oct: 8h. Nov: 6h. Dec: 5h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 6. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 2. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 2 days. Feb: 2 days. Mar: 3 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 1 days.
Climate Trends
Average highs have warmed by 0.8°C (1.4°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 30°C | Aug · 29°C |
| Coldest month | Feb 2025 · 3°C | Jan · 1°C |
| Wettest month | Jan 2025 · 213 mm | Nov · 115 mm |
| Windiest month | Mar 2025 · 17 km/h | Mar · 17 km/h |
Month-by-Month Weather Table
January
Poor 
February
Fair March
Poor April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Fair December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 9°C / 1°C | 6°C / -2°C | 9days (99 mm) Wet | 5.8h Fair | 84% Humid | 2 Low | Poor | View Details |
| February | 11°C / 2°C | 8°C / -1°C | 8days (74 mm) Wet | 7.3h Good | 80% Humid | 3.1 Moderate | Fair | View Details |
| March | 13°C / 3°C | 10°C / 0°C | 13days (105 mm) Wet | 8.7h Good | 77% Humid | 4.1 Moderate | Poor | View Details |
| April | 16°C / 5°C | 14°C / 3°C | 11days (92 mm) Wet | 10.3h Excellent | 72% Muggy | 5.8 High | Fair | View Details |
| May | 20°C / 9°C | 19°C / 7°C | 10days (56 mm) Wet | 11.8h Excellent | 67% Muggy | 6.8 High | Good | View Details |
| June best | 24°C / 13°C | 24°C / 12°C | 7days (52 mm) Good | 12.8h Excellent | 65% Muggy | 7.5 Very High | Excellent | View Details |
| July best | 29°C / 16°C | 29°C / 15°C | 3days (10 mm) Excellent | 13.5h Excellent | 53% Moderate | 7.9 Very High | Excellent | View Details |
| August best | 29°C / 16°C | 29°C / 16°C | 2days (9 mm) Excellent | 12.5h Excellent | 51% Moderate | 7.3 Very High | Excellent | View Details |
| September best | 24°C / 12°C | 23°C / 11°C | 6days (50 mm) Good | 10.4h Excellent | 63% Muggy | 5.7 High | Excellent | View Details |
| October | 19°C / 10°C | 17°C / 8°C | 10days (112 mm) Wet | 7.9h Good | 72% Muggy | 3.7 Moderate | Good | View Details |
| November | 12°C / 5°C | 10°C / 2°C | 13days (115 mm) Wet | 6.2h Fair | 84% Humid | 2.4 Moderate | Fair | View Details |
| December | 10°C / 3°C | 7°C / 0°C | 12days (108 mm) Wet | 5.2h Fair | 87% Very Muggy | 2.1 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Samil are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Samil, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Samil is August, with average daytime highs of 29°C (84°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Samil is January, with average overnight lows of 1°C (34°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Samil is November, averaging 115mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Samil runs through March, November, December, April, with the heaviest rainfall in March. Based on 10-year averages for Samil.
Samil receives approximately 112 sunshine hours per year. The sunniest month is July with around 14 hours. Based on climate data for Samil.
The least favorable months to visit Samil are January, February, March, December, primarily due to frequent rain. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Samil is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Samil is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Samil receives snow. Months with snowfall average 2 snow days and 1 cm (0 in) of accumulation, with about 6 frost days during winter.
Average wind speeds in Samil are 15 km/h (9 mph). The windiest month is March with peak winds reaching 17 km/h (11 mph) (gusts up to 41 km/h / 26 mph).
Samil averages 8 clear-sky days per month with overall cloud cover around 50%. The clearest skies occur in July.
The annual average dew point in Samil is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Samil 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 Samil ranges from 6°C (43°F) to 16°C (61°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 Samil. It earns a climate score of 8.3/10 with Excellent.
For June in Samil, pack Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. With average highs of 24°C (75°F) and 7 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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