Climate Insights for Donostia / San Sebastián

The climate in Donostia / San Sebastián is temperate. The average annual temperature is 14°C and approximately 1,531 mm of precipitation falls per year. Donostia / San Sebastián receives a notable amount of rainfall throughout the year, including during its driest month. Donostia / San Sebastián is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 6°C. Light snow can occur between January and February.The climate in Donostia / San Sebastián is temperate. The average annual temperature is 57°F and approximately 60.3 in of precipitation falls per year. Donostia / San Sebastián receives a notable amount of rainfall throughout the year, including during its driest month. Donostia / San Sebastián is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 42°F. Light snow can occur between January and February.

Donostia / San Sebastián sees moderate temperature variation throughout the year, ranging from 6°C to 23°C. August is the warmest month, though highs remain moderate at 23°C with a mean of 20°C. January is the coolest month, with minimum temperatures around 6°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.Donostia / San Sebastián sees moderate temperature variation throughout the year, ranging from 42°F to 74°F. August is the warmest month, though highs remain moderate at 74°F with a mean of 68°F. January is the coolest month, with minimum temperatures around 42°F and an average of 46°F. Daily temperature variation is modest, with an average difference of 10°F between highs and lows. The sharpest temperature change occurs between October and November, with a 8°F shift in average temperatures.

Donostia / San Sebastián is a fairly wet location, receiving approximately 1,531 mm of precipitation annually, which averages out to around 128 mm per month. The wettest month is November, averaging 191 mm of rainfall. January and December also tend to see above-average precipitation. The driest month is July, with just 71 mm. That's 120 mm less than November, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Light snowfall can occur between January and February, totalling around 9cm annually. February is the snowiest month with approximately 3cm.Donostia / San Sebastián is a fairly wet location, receiving approximately 60.3 in of precipitation annually, which averages out to around 5 in per month. The wettest month is November, averaging 7.5 in of rainfall. January and December also tend to see above-average precipitation. The driest month is July, with just 2.8 in. That's 4.7 in less than November, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Light snowfall can occur between January and February, totalling around 4in annually. February is the snowiest month with approximately 1in.

Donostia / San Sebastián is relatively calm, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 14km/h in winter, 12km/h in spring, 9km/h in summer, 12km/h in autumn.Donostia / San Sebastián is mildly breezy, with an average annual wind speed of 7mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is December, averaging 9mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 6mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3mph gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 9mph in winter, 8mph in spring, 6mph in summer, 8mph in autumn.

The best time to visit Donostia / San Sebastián is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 83 mm per month. By contrast, January can be quite cold with temperatures dropping to 6°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.The best time to visit Donostia / San Sebastián is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 67°F with modest rainfall averaging 3.3 in per month. By contrast, January can be quite cold with temperatures dropping to 42°F. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Donostia / 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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 Donostia / 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. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. 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.