Suffolk Weather & Climate: Best Time to Visit

Visitors to Suffolk can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 32°C (90°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 10°C (50°F).

At night, temperatures range from around 21°C (70°F) in July to -1°C (30°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Suffolk is known for its substantial rain/snowfall, with annual precipitation reaching 1334 mm (53 in). Suffolk can be quite wet during September, receiving approximately 162 mm (6.4 in) of precipitation over 11 rainy days.

In contrast, during the driest month (February), you will experience much drier conditions, with 68 mm (2.7 in) of precipitation spread across 9 rainy days. For more details, please visit our Suffolk Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Suffolk can be enjoyed more throughout the sunniest month of June under a blue sky, with approximately 9.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 5.3 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Suffolk.

The city experiences its highest humidity in August, reaching 74%. In April, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year