Climate Insights for Milford Haven

The climate in Milford Haven is temperate. The average annual temperature is 11°C and approximately 1256mm of precipitation falls per year. Milford Haven receives a notable amount of rainfall throughout the year, including during its driest month. Milford Haven 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 February, March, January, when temperatures can drop to 6°C. Light snow can occur between March and December.

Milford Haven sees moderate temperature variation throughout the year, ranging from 6°C to 18°C. August is the warmest month, though highs remain moderate at 18°C with a mean of 16°C. February is the coolest month, with minimum temperatures around 6°C and an average of 7°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between October and November, with a 3°C shift in average temperatures.

Milford Haven is a fairly wet location, receiving approximately 1256mm of precipitation annually, which averages out to around 105mm per month. The wettest month is December, averaging 151mm of rainfall. November and October also tend to see above-average precipitation. The driest month is May, with just 49mm. That's 103mm less than December, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between March and December, totalling around 6cm annually. March is the snowiest month with approximately 3cm.

Milford Haven is relatively calm, with an average annual wind speed of 6km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months.

It is currently summer in Milford Haven, which began on June 21, 2026. Milford Haven 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 18°C, while the coldest stretch bottoms out in February near 6°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Milford Haven is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 67mm per month. By contrast, August can be uncomfortably hot with highs reaching 18°C, while February is the coldest period with lows dropping to 6°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 Milford Haven 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.