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New Zealand weather

Weather in Hamilton for September 2026

Your guide to Hamilton weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Hamilton is slightly cooler than the historical average by 0.5 °C.

  • The forecast for the next days in Hamilton predicts temperatures to be around 14 °C, close to the historical average.

  • In general, the average temperature in Hamilton at the beginning of September is 15.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 14.9 °C by the end of September.

    • Rain 🌧️

  • Hamilton experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 132.1 mm.

Average dry days
6
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/6°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Hamilton Weather September

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

Temperatures trend during September in Hamilton

See the weather trend as well as the moving average line

September weather in Hamilton day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 15° /6° 3.8 mm 4
2 Sept. Mist
Mist
 16° /6° 0.6 mm 4
3 Sept. Fog
Fog
 16° /7° 4.4 mm 4
4 Sept. Patchy rain possible
Patchy rain possible
 15° /7° 1.9 mm 4
5 Sept. Sunny
Sunny
 15° /6° 4.4 mm 4
6 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /7° 5.4 mm 4
7 Sept. Patchy rain possible
Patchy rain possible
 16° /6° 5.7 mm 4
8 Sept. Fog
Fog
 15° /3° 0.5 mm 4
9 Sept. Patchy rain possible
Patchy rain possible
 15° /3° 0.1 mm 4
10 Sept. Light rain shower
Light rain shower
 16° /6° 5.4 mm 4
11 Sept. Patchy rain possible
Patchy rain possible
 15° /5° 3.5 mm 4
12 Sept. Mist
Mist
 15° /5° 7 mm 4
13 Sept. Light rain shower
Light rain shower
 14° /6° 0.7 mm 4
14 Sept. Patchy rain possible
Patchy rain possible
 16° /7° 5.7 mm 4
15 Sept. Cloudy
Cloudy
 15° /5° 2.7 mm 4
16 Sept. Mist
Mist
 16° /5° 3.7 mm 4
17 Sept. Overcast
Overcast
 17° /10° 2.4 mm 4
18 Sept. Light rain shower
Light rain shower
 12° /9° 9.1 mm 5.1
19 Sept. Sunny
Sunny
 15° /7° 0.8 mm 4.9
20 Sept. Patchy rain possible
Patchy rain possible
 12° /7° 4.3 mm 6.5
21 Sept. Sunny
Sunny
 14° /4° 0.1 mm 5.2
22 Sept. Sunny
Sunny
 15° /10° 0.3 mm 5
23 Sept. Sunny
Sunny
 13° /5° 0 mm 5
24 Sept. Sunny
Sunny
 14° /1° 0 mm 5
25 Sept. Sunny
Sunny
 14° /0° 0 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 13° /5° 1.5 mm 4
27 Sept. Mist
Mist
 15° /8° 0.5 mm 5
28 Sept. Sunny
Sunny
 17° /7° 0.5 mm 5
29 Sept. Patchy rain possible
Patchy rain possible
 14° /6° 14.9 mm 4
30 Sept. Overcast
Overcast
 17° /9° 0.1 mm 5
Next
Important Notice
Our weather forecast for Hamilton 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 Hamilton forecast closer to your planned date for the most up-to-date weather information.
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Hamilton in September - FAQ

What are the expected maximum and minimum temperatures in Hamilton during September?
During September, expect a variety of temperatures with highs around 15° and lows near 6°, suitable for diverse activities and preferences.

How much rainfall should be expected in Hamilton during September?
Significant rainfall exceeding 132.1 mm is expected in Hamilton during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Hamilton during September?
The average wind speed in Hamilton during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Hamilton

Explore the daily rainfall trends and prepare for Hamiltons September weather 💧
Typically, Hamilton has 24 rainy days in September with a total of 132.1 mm of rainfall.

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Location coordinates Where is Hamilton?

Get accurate weather forecasts for Hamilton, located at latitude -37.783 and longitude 175.283. Stay updated with localized weather information tailored for Hamilton.

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