Climate Insights for Tarnos

The climate in Tarnos is temperate. The average annual temperature is 15°C and approximately 1336mm of precipitation falls per year. Tarnos receives a notable amount of rainfall throughout the year, including during its driest month. Tarnos 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, March, when temperatures can drop to 8°C.

Tarnos sees moderate temperature variation throughout the year, ranging from 8°C to 24°C. August is the warmest month, though highs remain moderate at 24°C with a mean of 22°C. January is the coolest month, with minimum temperatures around 8°C and an average of 9°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.

Tarnos is a fairly wet location, receiving approximately 1336mm of precipitation annually, which averages out to around 111mm per month. The wettest month is November, averaging 184mm of rainfall. December and January also tend to see above-average precipitation. The driest month is July, with just 40mm. That's 144mm 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.

Tarnos 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 January, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, 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 2km/h gap between the calmest and windiest months.

It is currently summer in Tarnos, which began on June 21, 2026. Tarnos is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 24°C, while the coldest stretch bottoms out in January near 8°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Tarnos is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 66mm per month. By contrast, January can be quite cold with temperatures dropping to 8°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Tarnos 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.