Marlborough (Picton)
September
Weather in Marlborough for September 2025
Your guide to Marlborough weather in September - trends and predictions
Wind Warning - See hour by hour.
Until now, September 2025 in Marlborough is slightly cooler than the historical average by -1 °C.
The forecast for the upcoming days in Marlborough predicts a temperature of 15.8 °C, which is slightly above the historical average.
In general, the average temperature in Marlborough at the beginning of September is 13.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 15.3 °C by the end of September.
The climate of Marlborough in September is notably wet, with an average of 11 rainy days, and a total of 41.9 mm of precipitation.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
19
Dry days
11
Rainy days
0
Snow days
13°/3°
Temperatures
16 km/h
Avg max wind
76 %
Avg humidity
Marlborough Weather September
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What’s the Weather Like in Marlborough This September?
Discover the average temperatures and weather trends across Marlborough’s cities this September.
Temperatures trend during September in Marlborough
See the weather trend as well as the moving average line
September weather in Marlborough day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 14° /4° | 1 mm | 5 | |
| 2 Sept. |  Sunny | 13° /3° | 0.6 mm | 5 | |
| 3 Sept. |  Light drizzle | 13° /4° | 1.2 mm | 5 | |
| 4 Sept. |  Light rain shower | 13° /2° | 5.9 mm | 5 | |
| 5 Sept. | Sunny | 15° /3° | 4.9 mm | 5 | |
| 6 Sept. | Partly cloudy | 15° /1° | 0.1 mm | 5 | |
| 7 Sept. | Patchy rain possible | 14° /2° | 1.1 mm | 5 | |
| 8 Sept. | Patchy rain possible | 12° /2° | 0.1 mm | 4 | |
| 9 Sept. | Light drizzle | 13° /1° | 3.3 mm | 4 | |
| 10 Sept. | Sunny | 14° /3° | 1.6 mm | 5 | |
| 11 Sept. | Sunny | 12° /1° | 0 mm | 5 | |
| 12 Sept. |  Overcast | 15° /1° | 0 mm | 5 | |
| 13 Sept. | Light rain shower | 12° /1° | 3.9 mm | 4 | |
| 14 Sept. | Patchy rain possible | 13° /6° | 0.8 mm | 4 | |
| 15 Sept. | Patchy rain possible | 12° /6° | 0.1 mm | 4 | |
| 16 Sept. | Sunny | 19° /6° | 0 mm | 1.1 | |
| 17 Sept. | Patchy rain possible | 17° /8° | 0.1 mm | 1 | |
| 18 Sept. | Patchy rain possible | 16° /7° | 1.2 mm | 1 | |
| 19 Sept. | Patchy rain possible | 11° /4° | 3 mm | 1 | |
| 20 Sept. | Partly cloudy | 15° /2° | 0 mm | 0.9 | |
| 21 Sept. | Patchy rain possible | 13° /10° | 3 mm | 0 | |
| 22 Sept. | Patchy rain possible | 19° /8° | 0.2 mm | 4 | |
| 23 Sept. | Partly cloudy | 18° /5° | 0 mm | 5 | |
| 24 Sept. | Partly cloudy | 17° /4° | 0 mm | 4 | |
| 25 Sept. | Partly cloudy | 16° /6° | 0 mm | 5 | |
| 26 Sept. | Sunny | 15° /3° | 0 mm | 4 | |
| 27 Sept. | Patchy rain possible | 13° /9° | 4.7 mm | 4 | |
| 28 Sept. | Sunny | 14° /4° | 0 mm | 4 | |
| 29 Sept. | Patchy rain possible | 18° /5° | 0.4 mm | 4 | |
| 30 Sept. | Sunny | 14° /3° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Marlborough 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 Marlborough forecast closer to your planned date for the most up-to-date weather information.
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Marlborough in September - FAQ
What are the expected maximum and minimum temperatures in Marlborough during September?
Prepare for cooler days with highs just around 13° and colder nights, dipping below 3°.
How much rainfall should be expected in Marlborough during September?
In September, Marlborough can expect light to moderate rainfall, totaling 41.9 mm across approximately 11 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Marlborough during September?
The average wind speed in Marlborough during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Marlborough
Explore the daily rainfall trends and prepare for Marlboroughs September weather 💧
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