September weather forecast
Tauhunu, Cook Islands

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Weather in September

September carries on the rhythms of the previous months - warm sea temperatures, less rainfall, and persistent winds. A further drop in rainfall to 63mm (2.48") highlights the prevailing dryness in Tauhunu. Correspondingly, the month enjoys an equal number of sunshine hours as August, ensuring that the city remain lit for most of the day. Winds are slightly lower compared to July and August but serve to maintain comfortable conditions. Hence, September delivers consistent warmth, diminishing rain levels, and a fair share of sunlight.

Temperature

Tauhunu experiences its lowest average temperatures in September, reaching a peak of 27.8°C (82°F) and a minimum of 27.1°C (80.8°F).

Heat index

The heat index in September is estimated at a hot 31°C (87.8°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

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

Rainfall

The month with the least rainfall in Tauhunu is September, when the rain falls for 20.8 days and typically collects 63mm (2.48") of precipitation.

Sea temperature

The months with the coldest seawater are July through September, with an average sea temperature of 28°C (82.4°F).
Note: A water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm and enjoyable, allowing water activities to be pleasant for extended periods without irritation.

Daylight

In Tauhunu, Cook Islands, the average length of the day in September 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 06:27 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.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. 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 risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.
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Frequently asked questions

What are the coldest months in Tauhunu?

During the coldest month in Tauhunu, September, temperatures average a high of 27.8°C (82°F) and a low of 27.1°C (80.8°F).

What is the temperature in September in Tauhunu?

The average high-temperature and low-temperature in Tauhunu during September are 27.8°C (82°F) and 27.1°C (80.8°F) respectively. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 31°C (87.8°F).

What are the most humid months in Tauhunu?

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

What is the average humidity in September in Tauhunu?

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

What is the driest month in Tauhunu?

The month with the least rainfall in Tauhunu, Cook Islands, is September, when the rain falls for 20.8 days and typically collects 63mm (2.48") of precipitation.

How much does it rain in Tauhunu in September?

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.

How warm is the water in September in Tauhunu?

In Tauhunu, Cook Islands, in September, the average water temperature is 28°C (82.4°F). 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.

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

In Tauhunu, the average day length in September 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 06:27 and sunset at 18:39 -10.

What are the months with the most sunshine in Tauhunu?

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

How long on average sun shines in September in Tauhunu?

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

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

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

When is 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, Cook Islands.

What is the UV index intensity in September in Tauhunu?

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
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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 1min

The month with the longest days is December (Average daylight: 12h and 42min).
The month with the shortest days is June (Average daylight: 11h and 30min).

  • Average sunshine in September: 8h and 2min

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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Tauhunu, Cook Islands

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