September weather forecast
Tauhunu, Cook Islands

Weather in September

The first month of the spring, September, is still a warm month in Tauhunu, Cook Islands, with an average temperature ranging between max 27.8°C (82°F) and min 27.1°C (80.8°F).

Temperature

With an average high-temperature of 27.8°C (82°F) and an average low-temperature of 27.1°C (80.8°F), September is the coldest month.

Heat index

The average heat index in September is computed to be a hot 31°C (87.8°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, pregnancy, metabolic differences, and differences in body mass, height, and shape affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

February through October, with an average relative humidity of 76%, are the most humid months.

Rainfall

September is the month with the least rainfall in Tauhunu. Rain falls for 20.8 days and accumulates 63mm (2.48") of precipitation.

Sea temperature

July through September, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater.
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In September, the average length of the day is 12h and 3min.
On the first day of September, sunrise is at 06:46 and sunset at 18:41. On the last day of the month, sunrise is at 06:28 and sunset at 18:39 -10.

Sunshine

May, September and October, with an average of 8.3h of sunshine, are months with the most sunshine in Tauhunu, Cook Islands.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Tauhunu. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the coldest month in Tauhunu?

September is the coldest month in Tauhunu, with an average high-temperature of 27.8°C (82°F) and an average low-temperature of 27.1°C (80.8°F).

What is the temperature in September in Tauhunu?

The average high-temperature, in September, in Tauhunu, Cook Islands, is 27.8°C (82°F), while the average low-temperature is 27.1°C (80.8°F). in September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is computed to be 31°C (87.8°F).

What is the most humid month in Tauhunu?

The months with the highest humidity in Tauhunu, Cook Islands, are February through October, with an average relative humidity of 76%.

What is the average humidity in September in Tauhunu?

In Tauhunu, Cook Islands, the average relative humidity in September is 76%.

What is the driest month in Tauhunu?

September is the month with the least rainfall. Rain falls for 20.8 days and accumulates 63mm (2.48") of precipitation.

How many days does it rain in September in Tauhunu?

In Tauhunu, Cook Islands, during September, the rain falls for 20.8 days and regularly aggregates up to 63mm (2.48") of precipitation.

When is the sea coldest in Tauhunu?

July through September, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Tauhunu, Cook Islands.

What is the water temperature in September in Tauhunu?

In September, the average sea temperature in Tauhunu is 28°C (82.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Tauhunu have in September?

In September, the average day length is 12h and 3min.

When is the sunrise / sunset in September in Tauhunu?

On the first day of September in Tauhunu, sunrise is at 06:46 and sunset at 18:41. On the last day of the month, sunrise is at 06:28 and sunset at 18:39 -10.

What is the month with the most sunshine in Tauhunu?

The months with the most sunshine in Tauhunu, Cook Islands, are May, September and October, with an average of 8.3h of sunshine.

How many hours of sunshine does Tauhunu have in September?

In Tauhunu, the average sunshine duration in September is 8.3h.

What are the months with the highest UV index in Tauhunu?

January through December, with an average maximum UV index of 7, are months with the highest UV index in Tauhunu.

What is the month with the lowest UV index in Tauhunu?

January through December, with an average maximum UV index of 7, are months with the lowest UV index in Tauhunu.

What is the UV index intensity in September in Tauhunu?

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.

Average temperature in September
Tauhunu, Cook Islands

Average temperature in September - Tauhunu, Cook Islands
  • Average high temperature in September: 27.8°C

The warmest month (with the highest average high temperature) is April (29.1°C).
The month with the lowest average high temperature is September (27.8°C).

  • Average low temperature in September: 27.1°C

The month with the highest average low temperature is April (28.1°C).
The coldest month (with the lowest average low temperature) is August (26.8°C).

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Average pressure in September
Tauhunu, Cook Islands

Average pressure in September - Tauhunu, Cook Islands
  • Average pressure in September: 1011.5mbar

The months with the highest atmospheric pressure are August and September (1011.5mbar).
The month with the lowest atmospheric pressure is January (1008.6mbar).

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Average wind speed in September
Tauhunu, Cook Islands

Average wind speed in September - Tauhunu, Cook Islands
  • Average wind speed in September: 25.2km/h

The windiest month (with the highest average wind speed) is July (25.5km/h).
The calmest month (with the lowest average wind speed) is November (17.9km/h).

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Average humidity in September
Tauhunu, Cook Islands

Average humidity in September - Tauhunu, Cook Islands
  • Average humidity in September: 76%

The months with the highest relative humidity are February, March, April, May, June, July, August, September and October (76%).
The month with the lowest relative humidity is December (74%).

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Average rainfall in September
Tauhunu, Cook Islands

Average rainfall in September - Tauhunu, Cook Islands
  • Average rainfall in September: 63mm

The wettest month (with the highest rainfall) is January (266mm).
The driest month (with the least rainfall) is September (63mm).

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Average rainfall days in September
Tauhunu, Cook Islands

Average rainfall days in September - Tauhunu, Cook Islands
  • Average rainfall days in September: 20.8 days

The month with the highest number of rainy days is March (28.7 days).
The month with the least rainy days is July (18.6 days).

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Average sea temperature in September
Tauhunu, Cook Islands

Average sea temperature in September - Tauhunu, Cook Islands
  • Average sea temperature in September: 28°C

The best months for swimming (with the highest average sea temperature) are January, February, March, April, May, June, October, November and December (29°C).
The coldest months (with the lowest average sea temperature) are July, August and September (28°C).

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Average daylight in September /
Average sunshine in September
Tauhunu, Cook Islands

Average daylight in September / Average sunshine in September - Tauhunu, Cook Islands
  • Average daylight in September: 12h and 3min

The month with the longest days is December (Average daylight: 12h and 43min).
The month with the shortest days is June (Average daylight: 11h and 32min).

  • Average sunshine in September: 8h and 18min

The months with the most sunshine are May, September and October (Average sunshine: 8h and 18min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).

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Average sunshine days in September
Tauhunu, Cook Islands

Average sunshine days in September - Tauhunu, Cook Islands
  • Average sunshine days in September: 5.7 days

The month with the most sunshine days is July (9.1 days).
The month with the least sunshine days is March (1.3 days).

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Average UV index in September
Tauhunu, Cook Islands

Average UV index in September - Tauhunu, Cook Islands
  • Average UV index in September: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

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Average cloud cover in September
Tauhunu, Cook Islands

Average cloud cover in September - Tauhunu, Cook Islands
  • Average cloud cover in September: 42

The months with the most cloud cover are January and February (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 41).

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Average visibility in September
Tauhunu, Cook Islands

Average visibility in September - Tauhunu, Cook Islands
  • Average visibility in September: 10km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).

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