Climate Insights for Gorseinon

The climate in Gorseinon is temperate. The average annual temperature is 11°C and approximately 1347mm of precipitation falls per year. Gorseinon receives a notable amount of rainfall throughout the year, including during its driest month. Gorseinon 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.

Gorseinon sees moderate temperature variation throughout the year, ranging from 3°C to 20°C. July is the warmest month, though highs remain moderate at 20°C with a mean of 16°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 October and November, with a 3°C shift in average temperatures.

Gorseinon is a fairly wet location, receiving approximately 1347mm of precipitation annually, which averages out to around 112mm per month. The wettest month is December, averaging 158mm of rainfall. October and November also tend to see above-average precipitation. The driest month is April, with just 73mm. That's 86mm 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 10cm annually. March is the snowiest month with approximately 4cm.

Gorseinon is mildly breezy, with an average annual wind speed of 16km/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 19km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 13km/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 18km/h in winter, 15km/h in spring, 14km/h in summer, 16km/h in autumn.

It is currently summer in Gorseinon, which began on June 21, 2026. Gorseinon 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 20°C, while the coldest stretch bottoms out in January near 3°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Gorseinon is during June and July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 88mm per month. By contrast, January can be quite cold with temperatures dropping to 3°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 table below shows monthly climate averages for Gorseinon 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.