Castro, Spain experiences average highs of 16°C (61°F) and lows of 7°C (45°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have warmed by 0.9°C (1.6°F) across the available records.
Castro, Spain Weather & Climate 2026
Monthly climate averages for Castro, Spain. 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
5.9/10
Best: June, July, August
UV Index
5
Low
Temperature 16°C / 7°C
Feels Like 14°C / 5°C
Rainy Days 11
Rainfall 85 mm
Sunshine 9 h
Humidity 81%
Wind Speed 16 km/h
Dew Point 8°C
Snow Days 1 days
Frost Days 6 days
Hottest Month
25°C
August
Avg Low13°C
Rain6days
Coldest Month
2°C
January
Avg High9°C
Rain13days
Driest Month
4days
July
Avg High24°C
Avg Low13°C
Windiest Month
18 km/h
March (Gusts 42)
Worst Time to Visit
Consider avoiding January, February, March, December due to frequent rain.
Sun Position
Sunrise 06:53
Daylight 15.3h
Sunset 22:11
Live conditions—
Castro on the map · live conditions
Castro, Spain
- Continent
- Europe
- Country
- Spain
- City
- Castro
- Population
- 5.8K
- Coordinates
- 42.77°, -7.58°
Seasonal Breakdown
Spring
Mar–May
Avg High 14°C
Avg Low 5°C
Rain 12 days/mo
Summer
Jun–Aug
Avg High 23°C
Avg Low 12°C
Rain 7 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 17°C
Avg Low 8°C
Rain 12 days/mo
Winter
Dec–Feb
Avg High 10°C
Avg Low 2°C
Rain 13 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 / 2°C . Feb: 11°C / 2°C . Mar: 12°C / 3°C . Apr: 14°C / 5°C . May: 17°C / 8°C . Jun: 20°C / 11°C . Jul: 24°C / 13°C . Aug: 25°C / 13°C . Sep: 21°C / 11°C . Oct: 18°C / 9°C . Nov: 12°C / 5°C . Dec: 10°C / 3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 127 mm. Feb: 95 mm. Mar: 109 mm. Apr: 86 mm. May: 76 mm. Jun: 64 mm. Jul: 14 mm. Aug: 27 mm. Sep: 54 mm. Oct: 116 mm. Nov: 127 mm. Dec: 122 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 86%. Feb: 84%. Mar: 82%. Apr: 79%. May: 79%. Jun: 80%. Jul: 74%. Aug: 73%. Sep: 77%. Oct: 80%. Nov: 86%. Dec: 88%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 16 km/h . Feb: 17 km/h . Mar: 18 km/h . Apr: 16 km/h . May: 16 km/h . Jun: 15 km/h . Jul: 16 km/h . Aug: 15 km/h . Sep: 15 km/h . Oct: 16 km/h . Nov: 17 km/h . Dec: 16 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 8h. Apr: 10h. May: 11h. Jun: 11h. Jul: 12h. Aug: 12h. 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 7. Jul: UV 8. Aug: UV 7. Sep: UV 5. Oct: UV 3. 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: 1 days. Feb: 1 days. Mar: 2 days. Apr: 0 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 0.9°C (1.6°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 · 27°C | Aug · 25°C |
| Coldest month | Mar 2025 · 2°C | Jan · 2°C |
| Wettest month | Jan 2025 · 205 mm | Jan · 127 mm |
| Windiest month | Jan 2025 · 20 km/h | Mar · 18 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September
Good October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 9°C / 2°C | 6°C / -2°C | 13days (127 mm) Wet | 5.1h Fair | 86% Very Muggy | 1.9 Low | Poor | View Details |
| February | 11°C / 2°C | 8°C / -1°C | 11days (95 mm) Wet | 6.4h Fair | 84% Humid | 2.9 Moderate | Poor | View Details |
| March | 12°C / 3°C | 9°C / -1°C | 14days (109 mm) Wet | 8h Good | 82% Humid | 4.2 Moderate | Poor | View Details |
| April | 14°C / 5°C | 13°C / 2°C | 11days (86 mm) Wet | 9.6h Good | 79% Humid | 5.7 High | Fair | View Details |
| May | 17°C / 8°C | 16°C / 6°C | 12days (76 mm) Wet | 10.7h Excellent | 79% Humid | 6.5 High | Good | View Details |
| June best | 20°C / 11°C | 20°C / 10°C | 11days (64 mm) Wet | 11h Excellent | 80% Humid | 7.3 Very High | Excellent | View Details |
| July best | 24°C / 13°C | 24°C / 12°C | 4days (14 mm) Good | 12.4h Excellent | 74% Muggy | 7.5 Very High | Excellent | View Details |
| August best | 25°C / 13°C | 25°C / 13°C | 6days (27 mm) Good | 11.6h Excellent | 73% Muggy | 7 High | Excellent | View Details |
| September | 21°C / 11°C | 20°C / 10°C | 9days (54 mm) Wet | 9.6h Good | 77% Humid | 5.2 High | Good | View Details |
| October | 18°C / 9°C | 16°C / 7°C | 13days (116 mm) Wet | 7.6h Good | 80% Humid | 3.4 Moderate | Good | View Details |
| November | 12°C / 5°C | 9°C / 2°C | 15days (127 mm) Wet | 5.9h Fair | 86% Very Muggy | 2.2 Moderate | Poor | View Details |
| December | 10°C / 3°C | 7°C / 0°C | 14days (122 mm) Wet | 4.8h Fair | 88% Very Muggy | 1.8 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Castro are June, July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Castro, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Castro is August, with average daytime highs of 25°C (76°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Castro is January, with average overnight lows of 2°C (35°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Castro is January, averaging 127mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Castro runs through November, March, December, January, with the heaviest rainfall in November. Based on 10-year averages for Castro.
Castro receives approximately 103 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Castro.
The least favorable months to visit Castro are January, February, March, December, primarily due to frequent rain. For the best conditions, consider June, July, August instead.
The annual average UV index in Castro is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Castro is 81%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes, Castro receives snow. Months with snowfall average 1 snow days and 1 cm (0 in) of accumulation, with about 6 frost days during winter.
Average wind speeds in Castro are 16 km/h (10 mph). The windiest month is March with peak winds reaching 18 km/h (11 mph) (gusts up to 42 km/h / 26 mph).
Castro averages 4 clear-sky days per month with overall cloud cover around 62%. The clearest skies occur in August.
The annual average dew point in Castro is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Castro has a Warm-Summer Mediterranean climate, classified as Csb 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 Castro ranges from 5°C (41°F) to 14°C (57°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 Castro. It earns a climate score of 7.9/10 with Excellent.
For June in Castro, pack Warm evening layer, Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses. With average highs of 20°C (68°F) and 11 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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