Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Chatham (MA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Chatham.
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Climate overview of Chatham
Temperatures in Chatham, Massachusetts, United States of America, vary greatly throughout the year. July is the hottest month at 25°C (77°F), while February is the coldest at 3°C (37°F).
The city receives considerable rain/snowfall, with around 1172 mm (46 in) annually. December is the wettest month. It has warm summers and cold winters. July is the sunniest month, averaging 10.0 hours of sunshine per day.
Chatham Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Chatham - and find the best time to visit.
Monthly Temperature in Chatham
The climate in Chatham is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 25°C (77°F) in July to a chilly 3°C (37°F) in the coolest month, February.
Nights vary from 18°C (64°F) in July to around -4°C (25°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Chatham
Chatham has a notably wet climate with abundant precipitation, recording 1172 mm (46 in) of rain/snowfall per year. Chatham offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month December (128 mm (5 in)) and the driest month August (71 mm (2.8 in)) is not too significant. For more details, please visit our Chatham 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 Chatham
For those who appreciate different seasons, Chatham serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.0 hours of sunshine daily, and embrace the darker days in January, offering only 4.9 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Nantucket, the United States of America (45 KM, 28 Miles).
Daily hours of sunshine
Data from: Nantucket, the United States of America (45 KM, 28 Miles).
Best Time to Visit Chatham
For comfortable weather, consider visiting Chatham in June, July, August and September. Conditions are usually least favourable in January, February, March, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
cold
Apr
mixed
May
good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
mixed
Nov
wet
Dec
wet
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July, August and September
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: February, with freezing nights around -4°C (25°F).
Frequently asked questions about the climate in Chatham
What is the best time to visit Chatham?
June, July, August and September typically offer the most optimal weather in Chatham. In contrast, January, February, March, November and December tend to have less optimal conditions. Chatham has warm summers and cold winters.
What temperatures can I expect in Chatham?
Daytime highs range from 3°C (37°F) in February to 25°C (77°F) in July. Nighttime lows range from -4°C (25°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Chatham get?
Annual rainfall is around 1172 mm (46 in). December is the wettest month with 128 mm (5 in), while August is the driest with 71 mm (2.8 in).
How sunny is Chatham?
Chatham receives around 2,605 hours of sunshine per year. July is the sunniest month with 301 hours, while January is the cloudiest with just 147 hours. Overall, Chatham enjoys abundant sunshine.
Chatham 3-Day Forecast
Chatham on the map
Chatham is highlighted - select any city to see its climate.
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