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Weather in Chatham for September 2025

Your guide to Chatham weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Yellow Wind Warning - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Chatham is slightly cooler than the historical average by -1.5 °C.

  • Expect cooler weather in the next days in Chatham with the forecast suggesting a temperature of 17.7 °C, lower than the historical average.

  • In general, the average temperature in Chatham at the beginning of September is 21.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.3 °C by the end of September.

    • Rain 🌧️

  • Chatham in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 89.8 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/13°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Chatham Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
22°
2
Patchy rain possible
21°
3
Light rain shower
22°
4
Light rain shower
20°
5
Overcast
21°
6
Sunny
23°
7
Sunny
23°
8
Partly cloudy
23°
9
Patchy rain possible
22°
10
Partly cloudy
22°
11
Partly cloudy
20°
12
Patchy rain possible
18°
13
Overcast
17°
14
Partly cloudy
19°
15
Weather Alert Patchy rain possible
19°
16
Partly cloudy
19°
17
Patchy rain possible
18°
18
Partly cloudy
23°
19
Sunny
26°
20
Patchy rain possible
18°
21
Patchy rain possible
17°
22
Patchy rain possible
16°
23
Patchy rain possible
18°
24
Patchy rain possible
14°
25
Patchy rain possible
14°
26
Sunny
15°
27
Partly cloudy
15°
28
Sunny
16°
29
Light rain shower
16°
30
Partly cloudy
17°

Temperatures trend during September in Chatham

See the weather trend as well as the moving average line

September weather in Chatham day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 22° /14° 3.7 mm 5
2 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 1.2 mm 5
3 Sept. Light rain shower
Light rain shower
 22° /14° 1.6 mm 5
4 Sept. Light rain shower
Light rain shower
 20° /13° 3.1 mm 5
5 Sept. Overcast
Overcast
 21° /13° 2.6 mm 5
6 Sept. Sunny
Sunny
 23° /14° 2.2 mm 5
7 Sept. Sunny
Sunny
 23° /15° 5.2 mm 6
8 Sept. Partly cloudy
Partly cloudy
 23° /14° 1.6 mm 6
9 Sept. Patchy rain possible
Patchy rain possible
 22° /13° 0 mm 5
10 Sept. Partly cloudy
Partly cloudy
 22° /14° 1.6 mm 5
11 Sept. Partly cloudy
Partly cloudy
 20° /11° 0.8 mm 5
12 Sept. Patchy rain possible
Patchy rain possible
 18° /10° 0.6 mm 4
13 Sept. Overcast
Overcast
 17° /11° 2.1 mm 4
14 Sept. Partly cloudy
Partly cloudy
 19° /9° 0.4 mm 5
15 Sept. Patchy rain possible
Patchy rain possible
 19° /14° 0.3 mm 1
16 Sept. Partly cloudy
Partly cloudy
 19° /12° 0.1 mm 0.9
17 Sept. Patchy rain possible
Patchy rain possible
 18° /11° 3.7 mm 0.2
18 Sept. Partly cloudy
Partly cloudy
 23° /16° 0 mm 0.8
19 Sept. Sunny
Sunny
 26° /14° 0 mm 0.9
20 Sept. Patchy rain possible
Patchy rain possible
 18° /15° 0.5 mm 4
21 Sept. Patchy rain possible
Patchy rain possible
 17° /13° 0.4 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 16° /12° 0.9 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 18° /11° 0.4 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 14° /10° 1 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 14° /8° 0.3 mm 3
26 Sept. Sunny
Sunny
 15° /9° 0 mm 4
27 Sept. Partly cloudy
Partly cloudy
 15° /9° 0 mm 4
28 Sept. Sunny
Sunny
 16° /8° 0 mm 4
29 Sept. Light rain shower
Light rain shower
 16° /10° 0.9 mm 4
30 Sept. Partly cloudy
Partly cloudy
 17° /10° 8.7 mm 5
Next
Important Notice
Our weather forecast for Chatham in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Chatham forecast closer to your planned date for the most up-to-date weather information.
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Chatham in September - FAQ

What are the expected maximum and minimum temperatures in Chatham during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Chatham during September?
Moderate rainfall is anticipated in Chatham during September, with a total of 89.8 mm spread over approximately 18 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Chatham during September?
The average wind speed in Chatham during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Chatham

Explore the daily rainfall trends and prepare for Chathams September weather 💧

UV exposure in Chatham during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Chatham?

Get accurate weather forecasts for Chatham, located at latitude 51.379 and longitude 0.528. Stay updated with localized weather information tailored for Chatham.

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