Weather in September
Temperature
September's onset brings an average high-temperature of a still refreshing 15.8°C (60.4°F), showing a minute difference from August's 13.8°C (56.8°F). Throughout September, a steady low-temperature average of 4.7°C (40.5°F) is noted.Humidity
The average relative humidity in September in Blenheim is 73.3%.Rainfall
In September, the rain falls for 8.5 days. Throughout September, 65mm (2.56") of precipitation is accumulated. Throughout the year, in Blenheim, there are 81.5 rainfall days, and 711mm (27.99") of precipitation is accumulated.Daylight
In Blenheim, the average length of the day in September is 11h and 49min.On the first day of the month, sunrise is at 6:48 am and sunset at 5:59 pm NZST. On the last day of September, in Blenheim, sunrise is at 6:59 am and sunset at 7:29 pm NZDT.
Note: On Sunday, 29. September 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from NZST to NZDT. Daylight Saving Time lasts until Sunday, 06. April 2025, at 3:00 am; consequently, the time zone reverts from NZDT to NZST.
Sunshine
The average sunshine in September is 6.3h.Frequently asked questions
What are the temperatures in Blenheim in September?
What is the average humidity in September in Blenheim?
How many days does it rain in September in Blenheim?
What is the average length of the day in September in Blenheim?
What time are sunrise and sunset in September in Blenheim?
When does Daylight Saving Time (DST) start in September in Blenheim?
How many hours of sunshine does Blenheim have in September?
Average temperature in September
Blenheim, New Zealand
- Average high temperature in September: 15.8°C
The warmest month (with the highest average high temperature) is January (24.1°C).
The month with the lowest average high temperature is July (12.6°C).
- Average low temperature in September: 4.7°C
The month with the highest average low temperature is January (11.8°C).
The coldest month (with the lowest average low temperature) is July (1.5°C).
Average humidity in September
Blenheim, New Zealand
- Average humidity in September: 73.3%
The month with the highest relative humidity is July (83.7%).
The month with the lowest relative humidity is December (67.5%).
Average rainfall in September
Blenheim, New Zealand
- Average rainfall in September: 65.2mm
The wettest month (with the highest rainfall) is July (74.3mm).
The driest month (with the least rainfall) is March (46.5mm).
Average rainfall days in September
Blenheim, New Zealand
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is September (8.5 days).
The month with the least rainy days is January (5 days).
Average daylight in September /
Average sunshine in September
Blenheim, New Zealand
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 15h and 6min).
The month with the shortest days is June (Average daylight: 9h and 12min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is January (Average sunshine: 8h and 30min).
The months with the least sunshine are June and July (Average sunshine: 5h and 6min).
Blenheim, New Zealand
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