Windsor Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Windsor.
Climate overview of Windsor
The climate in Windsor, Berkshire, United Kingdom, is marked by large temperature swings across the seasons, ranging from 23°C (73°F) in July to 9°C (48°F) in January.
Windsor sees a moderate amount of rain/snowfall, totalling around 722 mm (28 in) per year. It experiences warm summers and cold winters, creating some seasonal variation. July is the sunniest month, averaging 7.3 hours of sunshine per day.
Windsor Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Windsor - and find the best time to visit.
Monthly Temperature in Windsor
In Windsor, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 23°C (73°F) in July, the warmest time of the year, to a chilly 9°C (48°F) during cooler months like January.
At night, you can expect temperatures ranging from 13°C (55°F) in July to around 3°C (37°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Windsor
On average, Windsor receives a reasonable amount of rain/snowfall, with an annual precipitation of 722 mm (28 in). Year-round, Windsor has a balanced climate with minimal variation in precipitation. The difference between the wettest month, November, with 68 mm (2.7 in), and the driest month, March, with 49 mm (1.9 in), is minimal. For more details, please visit our Windsor 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 Windsor
Seasonal changes in sunshine hours are quite dramatic in Windsor. While July receives considerable daily sunshine with up to 7.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.8 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
Humidity in Windsor by Month
The relative humidity is high throughout the year in Windsor.
The city experiences its highest humidity in November, reaching 81%. In April, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Windsor
The mean wind speed over the year ranges from 3 m/s (6 knots) in May, June, July, August, September, October and November to 4 m/s (8 knots) in January, February, March, April and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Windsor
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: May and July
- Fewer rainy days: February, June, July, August and September
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Windsor
What is the best time to visit Windsor?
June, July, August and September typically offer the most optimal weather in Windsor. In contrast, January, February and December tend to have less optimal conditions. Windsor has warm summers and cold winters.
What temperatures can I expect in Windsor?
Daytime highs range from 9°C (48°F) in January to 23°C (73°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 Windsor get?
Annual rainfall is around 722 mm (28 in). November is the wettest month with 68 mm (2.7 in), while March is the driest with 49 mm (1.9 in).
How sunny is Windsor?
Windsor receives around 1,675 hours of sunshine per year. July is the sunniest month with 219 hours, while December is the cloudiest with just 54 hours.
Windsor 3-Day Forecast
Windsor on the map
Windsor is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Hike the South West Coast Path
The South West Coast Path means breathtaking nature, kind people and delicious food everywhere you go. It is an unforgettable experience and you need to add it to your bucket list.
Welcome to Totnes, the hidden treasure of South Devon
Totnes is a place where historical richness fuses effortlessly with a vibrant alternative culture and breathtaking natural surroundings. The town pulses with an amazing community spirit that you'll feel around every corner.
London's coolest neighborhoods you'll want to visit
Discover the 6 coolest neighborhoods in London for your trip! Explore vibrant Shoreditch, lively Soho, alternative Camden, and many more.
10 cities you should definitely visit in the UK
Discover the top 10 most fun and alternative cities in the UK, rich in art, culture, and adventure. Explore vibrant neighborhoods and unique places.