Climate Insights for Wicklow

The climate in Wicklow is cool. The average annual temperature is 10°C and approximately 1005mm of precipitation falls per year. Wicklow receives a notable amount of rainfall throughout the year, including during its driest month. Wicklow is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, March, when temperatures can drop to 3°C. Light snow can occur between January and December.

Wicklow sees moderate temperature variation throughout the year, ranging from 3°C to 18°C. July is the warmest month, though highs remain moderate at 18°C with a mean of 15°C. January is the coolest month, with minimum temperatures around 3°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between April and May, with a 3°C shift in average temperatures.

Wicklow is a moderately rainy area, receiving approximately 1005mm of precipitation annually, which averages out to around 84mm per month. The wettest month is December, averaging 108mm of rainfall. October and September also tend to see above-average precipitation. The driest month is April, with just 67mm. That's 42mm less than December, 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 16cm annually. March is the snowiest month with approximately 8cm.

Wicklow 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 February, averaging 26km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 18km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 8km/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 25km/h in winter, 21km/h in spring, 19km/h in summer, 23km/h in autumn.

It is currently spring in Wicklow, which began on March 20, 2026. Wicklow 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 July at around 18°C, while the coldest stretch bottoms out in January near 3°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The table below shows monthly climate averages for Wicklow 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.