San Martín Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit San Martín.
Climate overview of San Martín
The climate in San Martín, Asturias, Spain, is marked by large temperature swings across the seasons, ranging from 22°C (72°F) in August to 9°C (48°F) in January.
With around 1244 mm (49 in) of annual rain/snowfall, San Martín has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has warm summers and cold winters. The wettest month is May. The most sunshine falls in July, with an average of 5.9 hours of daily sunshine.
San Martín Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Martín - and find the best time to visit.
Monthly Temperature in San Martín
In San Martín, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 22°C (72°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 9°C (48°F).
At night, temperatures range from around 12°C (54°F) in August to 1°C (34°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in San Martín
San Martín experiences significant rain/snowfall throughout the year, averaging 1244 mm (49 in) of precipitation annually. San Martín experiences moderate seasonal variation in rainfall, with monthly averages ranging from 125 mm (4.9 in) in May, the wettest month, and 74 mm (2.9 in) in July, the driest month. For more details, please visit our San Martín Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in San Martín
San Martín can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 5.9 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 3.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in San Martín by Month
The relative humidity is high throughout the year in San Martín.
The city experiences its highest humidity in August, reaching 80%. In March, the humidity drops to its lowest level at 74%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit San Martín
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July and August
- Fewest rainy days: July, August and September
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in San Martín
What is the best time to visit San Martín?
June, July, August and September typically offer the most optimal weather in San Martín. In contrast, January, February, March, November and December tend to have less optimal conditions. San Martín has warm summers and cold winters.
What temperatures can I expect in San Martín?
Daytime highs range from 9°C (48°F) in January to 22°C (72°F) in August. Nighttime lows range from 1°C (34°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does San Martín get?
Annual rainfall is around 1244 mm (49 in). May is the wettest month with 125 mm (4.9 in), while July is the driest with 74 mm (2.9 in).
How sunny is San Martín?
San Martín receives around 1,762 hours of sunshine per year. July is the sunniest month with 178 hours, while December is the cloudiest with just 105 hours.
San Martín 3-Day Forecast
San Martín on the map
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