Normal weather for Chatham in September
It's warm in September in Chatham with an average temperature of 23°C. Temperatures this month range from a low of 19°C to a high of 27°C. At night, you can expect temperatures between 14°C and 19°C.
In September, there is an average of 136 mm of precipitation, spread over 16 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Chatham in September |
New York | ||
|---|---|---|---|
 Average Temperature |
23°C | 27°C | |
 High Temp |
27°C | 31°C | |
| Low Temp |
19°C | 21°C | |
 Total Precipitation |
136 mm | 57 mm | |
| Rainy Days |
16 days | 9 days | |
Start of September
The month of September starts in Chatham with warm temps, averaging around 25°C during the day and nights around 19°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
With the temperature difference between day and night, it’s smart to wear layers. A T-shirt, light pants or skirt, and a light jacket are great for the day. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
Mid September
By mid-September, daytime temps drop to around 23°C, with nights around 17°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
Since it cools down at night, it’s a good idea to wear layers. A T-shirt, light pants or skirt, and a light jacket are great for the day. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
End of September
By the end of September, the average daytime temperature in Chatham is around 22°C, while nighttime temps are about 16°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Because temperatures drop in the evening, wearing layers is recommended. A T-shirt, light pants or skirt, and a light jacket are great for the day. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
Find affordable trips to Chatham 
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Chatham?
Looking for sun? September isn’t a good month to be in Chatham. The temperature is nice, but there’s too much chance of rain.
Temperature records for Chatham in September
Check out the climate of Chatham for all months and discover the best travel time
August
Plan your next vacation
Don’t miss the best vacation deals for Chatham and see what our partners have for you.
Daily Temperature in September in Chatham
This chart shows the average daily high and low temperatures in September for Chatham, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Chatham
The chart below shows the average daily precipitation in September for Chatham, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 16 days of precipitation in Chatham.
Daily UV Index in September in Chatham
This chart shows the average daily UV index in September in Chatham, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Chatham Over the Years
This chart shows the average temperature in September in Chatham, measured in degrees Celsius, over the past few years.
Total Precipitation in September in Chatham Over the Years
This chart shows the average precipitation in September in Chatham, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in September for Chatham
Click on any day in September to get detailed info about the usual weather on that day in Chatham. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Chatham
Have you been to Chatham in September?
Share your weather experience in September in Chatham.
Average Weather in Chatham by Month
Click on a month below to see detailed weather info for Chatham. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
