January weather forecast
Ngatiarua, Cook Islands

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Weather in January

The first month of the year in Ngatiarua, Cook Islands, often brings high humidity, reaching up to 78%. The persistent moisture contributes to rainfall amounts, with extended tropical downpours evident throughout the month. Dominated by warmth, January weather can be unpredictable at times, with swift changes from bright sunshine to short-lived showers. Travelers, meanwhile, can savor a comfortable breeze as the island's tropical winds provide a pleasant respite. Notably, January registers an impressive 23.4 rainfall days, marking it as a period that sees significant precipitation.

Temperature

Ngatiarua's shift into January is marked by a subtle change to a still warm 27.2°C (81°F) from December's 26.5°C (79.7°F) in temperature. The nights of January in Ngatiarua cool down to an average low of 26.5°C (79.7°F), subtly lower than daytime highs.

Heat index

The heat index value for January is computed to be a hot 30°C (86°F). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

In January, the average relative humidity is 78%.

Rainfall

The wettest months are January and March, with an average 155mm (6.1") of rainfall.

Daylight

The average length of the day in January in Ngatiarua is 13h and 11min.
On the first day of January in Ngatiarua, sunrise is at 05:56 and sunset at 19:15. On the last day of the month, sunrise is at 06:15 and sunset at 19:15 -10.

Sunshine

The average sunshine in January is 7.8h.

UV index

The months with the highest UV index in Ngatiarua are January through March, May, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In January, a daily UV index of 7 turns into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.

Frequently asked questions

What is the average January temperature in Ngatiarua?

The high-temperature, in January, in Ngatiarua, is 27.2°C (81°F), while the low-temperature averages to 26.5°C (79.7°F). In January, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is computed to be 30°C (86°F).

What is the average humidity in January in Ngatiarua?

The average relative humidity in January in Ngatiarua is 78%.

What is the rainiest month in Ngatiarua?

The wettest months in Ngatiarua are January and March, with an average 155mm (6.1") of rainfall.

How much does it rain in Ngatiarua in January?

In Ngatiarua, Cook Islands, in January, it is raining for 23.4 days, with typically 155mm (6.1") of accumulated precipitation.

How many hours of daylight does Ngatiarua have in January?

The average day length in January in Ngatiarua is 13h and 11min.

What time are sunrise and sunset in January in Ngatiarua?

In January, on the first day of the month, sunrise is at 05:56 and sunset at 19:15. On the last day of the month, in Ngatiarua, sunrise is at 06:15 and sunset at 19:15 -10.

How many hours of sunshine does Ngatiarua have in January?

In January, the average sunshine duration in Ngatiarua is 7.8h.

When is the highest UV index in Ngatiarua?

January through March, May, November and December, with an average maximum UV index of 7, are months with the highest UV index in Ngatiarua, Cook Islands.

How high is the UV index in January in Ngatiarua?

In Ngatiarua, the average daily maximum UV index in January is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in January
Ngatiarua, Cook Islands

Average temperature in January - Ngatiarua, Cook Islands
  • Average high temperature in January: 27.2°C

The warmest month (with the highest average high temperature) is March (27.7°C).
The month with the lowest average high temperature is August (23.8°C).

  • Average low temperature in January: 26.5°C

The month with the highest average low temperature is March (26.7°C).
The coldest month (with the lowest average low temperature) is August (22.8°C).

Average pressure in January
Ngatiarua, Cook Islands

Average pressure in January - Ngatiarua, Cook Islands
  • Average pressure in January: 1010.6mbar

The month with the highest atmospheric pressure is September (1016.4mbar).
The month with the lowest atmospheric pressure is January (1010.6mbar).

Average wind speed in January
Ngatiarua, Cook Islands

Average wind speed in January - Ngatiarua, Cook Islands
  • Average wind speed in January: 23.1km/h

The windiest month (with the highest average wind speed) is September (25.1km/h).
The calmest month (with the lowest average wind speed) is March (20.4km/h).

Average humidity in January
Ngatiarua, Cook Islands

Average humidity in January - Ngatiarua, Cook Islands
  • Average humidity in January: 78%

The months with the highest relative humidity are November and December (79%).
The months with the lowest relative humidity are June and August (76%).

Average rainfall in January
Ngatiarua, Cook Islands

Average rainfall in January - Ngatiarua, Cook Islands
  • Average rainfall in January: 155mm

The wettest months (with the highest rainfall) are January and March (155mm).
The driest month (with the least rainfall) is August (29mm).

Average rainfall days in January
Ngatiarua, Cook Islands

Average rainfall days in January - Ngatiarua, Cook Islands
  • Average rainfall days in January: 23.4 days

The month with the highest number of rainy days is March (23.5 days).
The month with the least rainy days is August (10.3 days).

Average daylight in January /
Average sunshine in January
Ngatiarua, Cook Islands

Average daylight in January / Average sunshine in January - Ngatiarua, Cook Islands
  • Average daylight in January: 13h and 1min

The month with the longest days is December (Average daylight: 13h and 18min).
The month with the shortest days is June (Average daylight: 10h and 54min).

  • Average sunshine in January: 7h and 5min

The month with the most sunshine is November (Average sunshine: 8h and 54min).
The month with the least sunshine is June (Average sunshine: 5h and 42min).

Average sunshine days in January
Ngatiarua, Cook Islands

Average sunshine days in January - Ngatiarua, Cook Islands
  • Average sunshine days in January: 5.8 days

The month with the most sunshine days is August (16.3 days).
The month with the least sunshine days is March (5.6 days).

Average UV index in January
Ngatiarua, Cook Islands

Average UV index in January - Ngatiarua, Cook Islands
  • Average UV index in January: 7

The months with the highest UV index are January, February, March, May, November and December (UV index 7).
The months with the lowest UV index are April, June, July, August, September and October (UV index 6).

Average cloud cover in January
Ngatiarua, Cook Islands

Average cloud cover in January - Ngatiarua, Cook Islands
  • Average cloud cover in January: 49

The months with the most cloud cover are January, October, November and December (Cloud cover 49).
The months with the least cloud cover are March, April and September (Cloud cover 46).

Average visibility in January
Ngatiarua, Cook Islands

Average visibility in January - Ngatiarua, Cook Islands
  • Average visibility in January: 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).

Ngatiarua, Cook Islands

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