Seaham Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Seaham.
Climate overview of Seaham
The climate in Seaham, Durham, United Kingdom, is marked by large temperature swings across the seasons, ranging from 20°C (68°F) in July to 8°C (46°F) in January.
The city receives around 770 mm (30 in) of rainfall per year. August is the wettest month and March the driest. Sunshine peaks in May, when the city sees around 6.4 hours of sunshine per day.
Seaham Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Seaham — and find the best time to visit.
Monthly Temperature in Seaham
In Seaham, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a pleasant 20°C (68°F) in July to a chilly 8°C (46°F) in January.
Nighttime temperatures range from 13°C (55°F) in July to 3°C (37°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Seaham
On average, Seaham receives a reasonable amount of rainfall, with an annual precipitation of 770 mm (30 in). The wettest period in Seaham occurs in August, which receives around 74 mm (2.9 in) of precipitation. During the driest month, March, Seaham experiences moderate rainfall, totaling 51 mm (2 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Seaham Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Seaham
In Seaham, summer days are longer and more sunny, with daily sunshine hours peaking at 6.4 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.8 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Seaham
Frequently asked questions about the climate in Seaham
What is the best time to visit Seaham?
July and August typically offer the most optimal weather in Seaham. In contrast, January, February, March and December tend to have less optimal conditions.
What temperatures can I expect in Seaham?
Daytime highs range from 8°C (46°F) in January to 20°C (68°F) in July. Nighttime lows range from 3°C (37°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Seaham get?
Annual rainfall is around 770 mm (30 in). August is the wettest month with 74 mm (2.9 in), while March is the driest with 51 mm (2 in).
How sunny is Seaham?
Seaham receives around 1,528 hours of sunshine per year. May is the sunniest month with 192 hours, while December is the cloudiest with just 53 hours.
Seaham 3-Day Forecast
Seaham 3-Day Forecast
Seaham on the map
Seaham is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
London
23°C (73°F) Bath22°C (72°F) York22°C (72°F) Manchester
21°C (70°F) Edinburgh
19°C (66°F) Glasgow19°C (66°F) Torquay20°C (68°F) Blackpool19°C (66°F) 
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