Blenheim
September
Weather in Blenheim for September 2025
Your guide to Blenheim weather in September - trends and predictions
The forecast for the first days of September 2025 in Blenheim predicts temperatures to be around 14 °C, close to the historical average.
In general, the average temperature in Blenheim at the beginning of September is 14.1 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 13.6 °C by the end of September.
The climate of Blenheim in September is notably wet, with an average of 13 rainy days, and a total of 101.9 mm of precipitation.
Temperatures
Rain 🌧️
17
Dry days
13
Rainy days
0
Snow days
13°/4°
Temperatures
16 km/h
Avg max wind
77 %
Avg humidity
Blenheim Weather September
Move between months or click on a day
Temperatures trend during September in Blenheim
See the weather trend as well as the moving average line
September weather in Blenheim day by day
Click on a date for more information
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Sunny | 15° /4° | 0 mm | 4 | |
2 Sept. | Sunny | 12° /3° | 0 mm | 4 | |
3 Sept. | Sunny | 14° /4° | 0 mm | 4 | |
4 Sept. | Sunny | 16° /3° | 0 mm | 4 | |
5 Sept. | Patchy rain possible | 13° /7° | 0.1 mm | 3 | |
6 Sept. | Partly cloudy | 13° /3° | 0 mm | 4 | |
7 Sept. | Patchy rain possible | 16° /4° | 7.7 mm | 5 | |
8 Sept. | Sunny | 14° /3° | 0 mm | 4 | |
9 Sept. | Sunny | 14° /4° | 3.2 mm | 4 | |
10 Sept. | Light rain shower | 14° /5° | 2 mm | 5 | |
11 Sept. | Light rain shower | 12° /2° | 14.9 mm | 4 | |
12 Sept. | Overcast | 14° /2° | 0 mm | 4 | |
13 Sept. | Sunny | 13° /3° | 2.9 mm | 4 | |
14 Sept. | Overcast | 12° /3° | 0.2 mm | 4 | |
15 Sept. | Overcast | 13° /5° | 0 mm | 4 | |
16 Sept. | Partly cloudy | 13° /4° | 0.5 mm | 4 | |
17 Sept. | Light rain shower | 13° /4° | 3.9 mm | 4 | |
18 Sept. | Partly cloudy | 14° /0° | 0 mm | 5 | |
19 Sept. | Patchy rain possible | 13° /2° | 0.6 mm | 4 | |
20 Sept. | Partly cloudy | 15° /4° | 0.1 mm | 5 | |
21 Sept. | Partly cloudy | 15° /4° | 0 mm | 5 | |
22 Sept. | Light rain shower | 14° /4° | 5 mm | 4 | |
23 Sept. | Light rain shower | 14° /5° | 5.7 mm | 4 | |
24 Sept. | Light rain shower | 14° /4° | 1.4 mm | 4 | |
25 Sept. | Partly cloudy | 12° /3° | 0.1 mm | 5 | |
26 Sept. | Patchy rain possible | 14° /4° | 0.6 mm | 4 | |
27 Sept. | Overcast | 12° /4° | 0.2 mm | 4 | |
28 Sept. | Patchy rain possible | 15° /2° | 0.1 mm | 5 | |
29 Sept. | Light rain shower | 14° /4° | 0.6 mm | 4 | |
30 Sept. | Patchy rain possible | 14° /4° | 0.6 mm | 4 | |
Next |
Important Notice
Our weather forecast for Blenheim 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 Blenheim forecast closer to your planned date for the most up-to-date weather information.
Change Month
Blenheim in September - FAQ
What are the expected maximum and minimum temperatures in Blenheim during September?
Prepare for cooler days with highs just around 13° and colder nights, dipping below 4°.
How much rainfall should be expected in Blenheim during September?
Significant rainfall exceeding 101.9 mm is expected in Blenheim during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Blenheim during September?
The average wind speed in Blenheim during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Blenheim
Explore the daily rainfall trends and prepare for Blenheims September weather 💧
Quick links
More Blenheim weather pages
You are here
Get accurate weather forecasts for Blenheim, located at latitude -41.516 and longitude 173.953. Stay updated with localized weather information tailored for Blenheim.
Found a mistake?
We appreciate your attention to details. Tell us here.