Climate Insights for Ronneby

The climate in Ronneby is cool. The average annual temperature is 9°C and approximately 620mm of precipitation falls per year. Ronneby receives a notable amount of rainfall throughout the year, including during its driest month. Ronneby is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are February, January, March, when temperatures can drop to 0°C. Light snow can occur between January and December.

Ronneby sees moderate temperature variation throughout the year, ranging from 0°C to 20°C. August is the warmest month, though highs remain moderate at 20°C with a mean of 17°C. The coldest month is February, when overnight lows fall to 0°C and the daily average is 2°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between April and May, with a 5°C shift in average temperatures.

Ronneby is a relatively dry area, receiving approximately 620mm of precipitation annually, which averages out to around 52mm per month. The wettest month is October, averaging 65mm of rainfall. January and July also tend to see above-average precipitation. The driest month is April, with just 34mm. That's 31mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between January and December, totalling around 41cm annually. January is the snowiest month with approximately 13cm.

Ronneby is moderately windy, with an average annual wind speed of 22km/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 25km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 6km/h 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 24km/h in winter, 21km/h in spring, 19km/h in summer, 22km/h in autumn.

It is currently spring in Ronneby, which began on March 20, 2026. Ronneby 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 20°C, while the coldest stretch bottoms out in February near 0°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Ronneby is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 55mm per month. By contrast, February can be quite cold with temperatures dropping to 0°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 Ronneby 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.