Climate Insights for San Sebastián

The climate in San Sebastián is hot. The average annual temperature is 26°C and approximately 2,728 mm of precipitation falls per year. September is the wettest month, receiving around 379 mm of rainfall. San Sebastián sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in San Sebastián is hot. The average annual temperature is 80°F and approximately 107.4 in of precipitation falls per year. September is the wettest month, receiving around 14.9 in of rainfall. San Sebastián sits near the equator, so seasonal temperature differences are minimal throughout the year.

San Sebastián sees moderate temperature variation throughout the year, ranging from 22°C to 33°C. The warmest month is March, when average highs reach 33°C and the mean temperature sits around 28°C. October is the coolest month, with minimum temperatures around 22°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.San Sebastián sees moderate temperature variation throughout the year, ranging from 72°F to 92°F. The warmest month is March, when average highs reach 92°F and the mean temperature sits around 83°F. October is the coolest month, with minimum temperatures around 72°F and an average of 77°F. On average, daily temperatures fluctuate by about 15°F between overnight lows and afternoon highs.

San Sebastián is a very wet location, receiving approximately 2,728 mm of precipitation annually, which averages out to around 227 mm per month. The wettest month is September, averaging 379 mm of rainfall. October and May also tend to see above-average precipitation. The driest month is February, with just 15 mm. That's 364 mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.San Sebastián is a very wet location, receiving approximately 107.4 in of precipitation annually, which averages out to around 8.9 in per month. The wettest month is September, averaging 14.9 in of rainfall. October and May also tend to see above-average precipitation. The driest month is February, with just 0.6 in. That's 14.3 in less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

San Sebastián is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months.San Sebastián is relatively calm, with an average annual wind speed of 2mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 4mph, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 2mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2mph gap between the calmest and windiest months.

The table below shows monthly climate averages for San Sebastián based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for San Sebastián based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.