September weather forecast
Napier, New Zealand

Weather in September

September, the first month of the spring in Napier, is a comfortable month, with an average temperature fluctuating between 17.3°C (63.1°F) and 8.1°C (46.6°F).

Temperature

In Napier, the average high-temperature in September is essentially the same as in August - an enjoyable 17.3°C (63.1°F). In September, in Napier, the average low-temperature is 8.1°C (46.6°F).

Humidity

The average relative humidity in September is 69.2%.

Rainfall

In Napier, New Zealand, during September, the rain falls for 7.4 days and regularly aggregates up to 57.9mm (2.28") of precipitation. In Napier, during the entire year, the rain falls for 87.9 days and collects up to 784.8mm (30.9") of precipitation.

Sea temperature

In Napier, the average water temperature is 13.9°C (57°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

The average length of the day in September in Napier is 11h and 50min.
On the first day of the month, sunrise is at 6:35 am and sunset at 5:49 pm NZST. On the last day of September, in Napier, sunrise is at 6:49 am and sunset at 7:15 pm NZDT.
Note: On Sunday, 25. September 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from NZST to NZDT. Daylight Saving Time lasts until Sunday, 02. April 2023, at 3:00 am; consequently, the time zone reverts from NZDT to NZST.

Sunshine

The average sunshine in September in Napier is 6h.

UV index

In Napier, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in Napier?

The average relative humidity in September in Napier, New Zealand, is 69.2%.

How much does it rain in Napier in September?

In Napier, New Zealand, in September, it is raining for 7.4 days, with typically 57.9mm (2.28") of accumulated precipitation.

What is the sea water temperature in September in Napier?

In September, the average sea temperature is 13.9°C (57°F). Swimming in 13.9°C (57°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in September in Napier?

In Napier, New Zealand, the average day length in September is 11h and 50min.

When is the sunrise / sunset in September in Napier?

On the first day of September in Napier, New Zealand, sunrise is at 6:35 am and sunset at 5:49 pm NZST. On the last day of the month, sunrise is at 6:49 am and sunset at 7:15 pm NZDT.

When does Daylight Saving Time (DST) start in September in Napier?

On Sunday, 25. September 2022, at 2:00 am, Daylight Saving Time starts in Napier, New Zealand, and the time zone changes from NZST to NZDT. DST ends on Sunday, 02. April 2023, at 3:00 am.

How long on average sun shines in September in Napier?

In September, the average sunshine duration is 6h.

How high is the UV index in September in Napier?

In Napier, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in September
Napier, New Zealand

Average temperature in September - Napier, New Zealand
  • Average high temperature in September: 17.3°C

The warmest month (with the highest average high temperature) is January (24.5°C).
The month with the lowest average high temperature is July (14.1°C).

  • Average low temperature in September: 8.1°C

The months with the highest average low temperature are January and February (14.6°C).
The coldest month (with the lowest average low temperature) is July (5.6°C).

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Average humidity in September
Napier, New Zealand

Average humidity in September - Napier, New Zealand
  • Average humidity in September: 69.2%

The month with the highest relative humidity is June (79.9%).
The month with the lowest relative humidity is December (67%).

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Average rainfall in September
Napier, New Zealand

Average rainfall in September - Napier, New Zealand
  • Average rainfall in September: 57.9mm

The wettest month (with the highest rainfall) is July (108.3mm).
The driest month (with the least rainfall) is January (46.8mm).

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Average rainfall days in September
Napier, New Zealand

Average rainfall days in September - Napier, New Zealand
  • Average rainfall days in September: 7.4 days

The month with the highest number of rainy days is July (9.4 days).
The month with the least rainy days is February (5.9 days).

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Average sea temperature in September
Napier, New Zealand

Average sea temperature in September - Napier, New Zealand
  • Average sea temperature in September: 13.9°C

The best month for swimming (with the highest average sea temperature) is February (19.9°C).
The coldest month (with the lowest average sea temperature) is August (13.5°C).

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Average daylight in September /
Average sunshine in September
Napier, New Zealand

Average daylight in September / Average sunshine in September - Napier, New Zealand
  • Average daylight in September: 11h and 50min

The month with the longest days is December (Average daylight: 14h and 54min).
The month with the shortest days is June (Average daylight: 9h and 26min).

  • Average sunshine in September: 6h and 0min

The month with the most sunshine is January (Average sunshine: 8h and 0min).
The month with the least sunshine is July (Average sunshine: 4h and 18min).

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Average UV index in September
Napier, New Zealand

Average UV index in September - Napier, New Zealand
  • Average UV index in September: 4

The months with the highest UV index are January and December (UV index 11).
The month with the lowest UV index is June (UV index 1).

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