Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Porirua's weather in September displays an average high-temperature of a still fresh 12.3°C (54.1°F), showing minor disparity from August's 11.7°C (53.1°F). Porirua welcomes an average low temperature of 8.9°C (48°F) in September, a gentle shift from the day's high.Humidity
January through March, July, September through November, with an average relative humidity of 80%, are the least humid months.Rainfall
In September, in Porirua, New Zealand, the rain falls for 12.9 days. Throughout September, 32mm (1.26") of precipitation is accumulated. Throughout the year, in Porirua, there are 142.6 rainfall days, and 465mm (18.31") of precipitation is accumulated.Sea temperature
In September, the average sea temperature in Porirua is 12.7°C (54.9°F).Note: Swimming in 12.7°C (54.9°F) feels unbearing at 13°C (55.4°F) and can be life-risking below 10°C (50°F), causing breathing issues and cold shock, depending on a person's capacity.
Daylight
The average length of the day in September is 11h and 49min.On the first day of the month, sunrise is at 6:44 am and sunset at 5:56 pm NZST. On the last day of September, in Porirua, sunrise is at 6:55 am and sunset at 7:25 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
In Porirua, the average sunshine in September is 7.4h.UV index
In Porirua, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What are September temperatures in Porirua?
What is the least humid month in Porirua?
What is the average humidity in September in Porirua?
How many days does it rain in September in Porirua?
How cold is the water in September in Porirua?
How many hours of daylight does Porirua have in September?
When are sunrise and sunset in September in Porirua?
When does Daylight Saving Time (DST) start in September in Porirua?
How long on average sun shines in September in Porirua?
What is the UV index intensity in September in Porirua?
Average temperature in September
Porirua, New Zealand
- Average high temperature in September: 12.3°C
The warmest month (with the highest average high temperature) is February (19.2°C).
The month with the lowest average high temperature is July (11.2°C).
- Average low temperature in September: 8.9°C
The month with the highest average low temperature is February (14.7°C).
The coldest month (with the lowest average low temperature) is July (8.2°C).
Average pressure in September
Porirua, New Zealand
- Average pressure in September: 1012.3mbar
The month with the highest atmospheric pressure is March (1017.7mbar).
The months with the lowest atmospheric pressure are September and November (1012.3mbar).
Average wind speed in September
Porirua, New Zealand
- Average wind speed in September: 24.1km/h
The windiest month (with the highest average wind speed) is September (24.1km/h).
The calmest month (with the lowest average wind speed) is March (20.1km/h).
Average humidity in September
Porirua, New Zealand
- Average humidity in September: 80%
The months with the highest relative humidity are April, May, June, August and December (81%).
The months with the lowest relative humidity are January, February, March, July, September, October and November (80%).
Average rainfall in September
Porirua, New Zealand
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is June (55mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days in September
Porirua, New Zealand
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is June (14.8 days).
The month with the least rainy days is February (7.9 days).
Average sea temperature in September
Porirua, New Zealand
- Average sea temperature in September: 12.7°C
The best month for swimming (with the highest average sea temperature) is February (17.1°C).
The coldest month (with the lowest average sea temperature) is August (12.3°C).
Average daylight in September /
Average sunshine in September
Porirua, 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 18min).
- Average sunshine in September: 7h and 2min
The months with the most sunshine are November and December (Average sunshine: 9h and 6min).
The month with the least sunshine is June (Average sunshine: 5h and 12min).
Average sunshine days in September
Porirua, New Zealand
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is March (20.6 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in September
Porirua, New Zealand
- Average UV index in September: 4
The months with the highest UV index are January, February and December (UV index 5).
The months with the lowest UV index are May, June, July and August (UV index 3).
Average cloud cover in September
Porirua, New Zealand
- Average cloud cover in September: 40
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is February (Cloud cover 31).
Average visibility in September
Porirua, New Zealand
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Porirua, New Zealand
Weather forecast for your location
2. Allow the app to use your location
