Climate and monthly weather forecast
Arutanga, Cook Islands

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The climate of Arutanga

Arutanga, located in the Cook Islands, largely experiences an Am (Monsoon climate), according to the Köppen climate classification. This tropical monsoon climate is characterized by a nearly consistent temperature range and a significant amount of yearly rainfall. Throughout the year, the highest temperatures in Arutanga vary from 24.8°C (76.6°F) to 27.9°C (82.2°F), while low temperatures range from 23.8°C (74.8°F) to 27.3°C (81.1°F), illustrating a minimal seasonal temperature fluctuation.

Humidity averages out at around 77% throughout the year, contributing to the overall moist, warm climate typical of monsoon regions. Rainfall proves to be a striking aspect of Arutanga's weather patterns. The amount of rainfall is considerable, from a low of 27mm (1.06") in June to a peak of 159mm (6.26") in January. Consistently throughout the year, most days involve some rainfall, with the highest amount of rainy days being 25.1 in March and the least amount of rainy days standing at 13.2 in November.

The sea temperature around Arutanga moves from 26°C (78.8°F) to 28°C (82.4°F), providing a relatively warm sea year-round suitable for oceanic activities. The breeze varies from 19.3km/h (12mph) to 26.2km/h (16.3mph). Wind gusts, however, can reach up to 35.5km/h (22.1mph), more specifically in July. With modest changes in temperature, rainfall, and wind patterns, Arutanga exhibits a warm, humid, and rainy climate with minor variations throughout the year.

The best time to visit Arutanga

The best period to visit Arutanga, keeping in mind the weather conditions, would be between June and November. During these months, the location experiences a lesser intensity of rain ranging from 27mm (1.06") in June to an increase to 87mm (3.43") in October, with the number of rainy days also being significantly fewer. This period also sees a relatively consistent sea temperature around 26°C (78.8°F) to 27°C (80.6°F). The average low temperature fluctuates from 23.8°C (74.8°F) in August to 25.5°C (77.9°F) in November, coupled with a decrease in humidity making the overall climate more comfortable for outdoor activities.

The worst time to visit Arutanga

The period between December and April proves to be less desirable for visiting Arutanga. During this time, the rainfall reaches its peak, with 159mm (6.26") in January and high humidity levels hovering around 78%, leading to a relatively uncomfortable, humid and wet climate. Even though the sea remains warm during these months, the considerable amount of rainfall and overall weather conditions make this time less appealing for most travelers.

Spring weather in Arutanga

Arutanga's spring, notably from September to November, brings forward pleasant weather with moderate rainfall. Average high temperatures move from 25.2°C (77.4°F) in September to 26.2°C (79.2°F) in November, while low temperatures show slight variation from 24°C (75.2°F) in September to 25.5°C (77.9°F) in November. Rainfall during this period is progressively augmenting, starting with 31mm (1.22") in September to 71mm (2.8") in November.

Summer weather in Arutanga

Summer weather in Arutanga, spanning from December to February, is marked by high humidity levels and significant rainfall, reaching its peak in January with 159mm (6.26"). Meanwhile, temperatures remain almost constant around 26.8°C (80.2°F) to 27.7°C (81.9°F), contributing to a warm and humid climate. The sea remains warm at around 28°C (82.4°F), making it suitable for water activities despite the rainfall.

Autumn weather in Arutanga

Autumn months, from March to May, in Arutanga see a gradual decrease in rainfall and temperatures. The highest temperature drops from 27.9°C (82.2°F) in March to 26.8°C (80.2°F) in May. Simultaneously, rainfall decreases from 155mm (6.1") in March to 114mm (4.49") in May.

Winter weather in Arutanga

Winter in Arutanga is characterized by the least rainfall throughout the year. Within this period, June experiences the least rainfall with a low of 27mm (1.06"). Average highest and lowest temperature range are 25.9°C (78.6°F) to 24.8°C (76.6°F) and 24.6°C (76.3°F) to 23.8°C (74.8°F) respectively. This season attracts visitors with its slightly cooler temperatures and significantly fewer rainy days.

Weather in January

January in Arutanga, Cook Islands displays a warm atmosphere with clear visibility. Despite the continuous gust of wind, the temperature remains consistent, offering no significant variations from the previous month. The more notable precipitations in the island's town are also observed. Weather in January »

Weather in February

As February begins, the weather patterns in Arutanga do not differ wildly from January. The rainfall drops slightly to an average of 152mm (5.98"), demonstrating a bit of a dry trend throughout the month. Due to a decrease in daylight hours, the winds start to cool down. Weather in February »

Weather in March

In March, Arutanga sees a slight increase in temperature, generating a warm and welcoming climate throughout the month. The weather in March promises overcast skies, indicating a decrease in cloud coverage from the previous month. Weather in March »

Weather in April

April’s weather patterns see a gentle drop in temperature, marking the beginning of the transition towards the dry season in Arutanga. The presence of less humidity is noticeable as compared to the previous months, adding a crispness to the air. Weather in April »

Weather in May

In May, Arutanga experiences a noticeable drop in temperature, making it a relatively colder month compared to the rest of the year. The rainfall declines further to an average of 114mm (4.49") and contributes towards clearer skies and fewer overcast days. Weather in May »

Weather in June

June signifies a further decrease in temperature, amplifying the cool conditions evident in May. The number of rainy days drop significantly to 14.5 days, indicative of a dryer month with less precipitation. As the month progresses, Arutanga experiences a broad and consistent pattern of cooler weather and shorter days. Weather in June »

Weather in July

The month of July in Arutanga marks the lowest point in its yearly temperature cycle, underlining the cooler weather period. A further decrease in rainfall to an average of 42mm (1.65") indicates a profound dry month, with the wind speed increasing to an average of 26.2km/h (16.3mph). Weather in July »

Weather in August

With the arrival of August, Arutanga experiences an increase in temperature, signaling the end of the cooler period. Despite the slight increase from July's low, the weather during August remains quite cool and serene. The average rainfall continues to decline, dropping to 32mm (1.26"), setting a new low for precipitation in the year. Weather in August »

Weather in September

As Arutanga steps into September, it welcomes an increase in temperatures. A slight rise in average rainfall to 31mm (1.22") is observed, revealing a shift towards a moister climate. Despite being a warmer month than August, both the sea temperature and wind speed remain constant, ensuring the maintenance of a comfortable temperature. Weather in September »

Weather in October

October in Arutanga shows a significant change in weather patterns with a considerable increase in rainfall to an average of 87mm (3.43"). Despite the change in rainfall, temperatures remain consistent with September, indicating the stable tropical climate of the region. Weather in October »

Weather in November

Moving towards the end of the year, November in Arutanga witnesses a slight decrease in rainfall compared to October. The transition from a dry to a wet climate continues, with average temperatures increasing yet again. Longer daylight hours and an increase in sea temperature furthermore contribute to a warm and pleasant island experience. Weather in November »

Weather in December

December in Arutanga sees a further increase in average rainfall, reverting to the wet weather patterns seen at the beginning of the year. The town celebrates the end of the year under warm and sunny skies as temperatures rise. Weather in December »
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Frequently asked questions

What is the wettest month in Arutanga?

The month with the most rainfall in Arutanga is January, when the rain falls for 22.5 days and typically aggregates up to 159mm (6.26") of precipitation.

How many days does it rain in Arutanga?

Throughout the year, there are 214.3 rainfall days, and 1133mm (44.61") of precipitation is accumulated.

What are the months with the warmest sea water in Arutanga?

The months with the warmest seawater in Arutanga are January through April, with an average sea temperature of 28°C (82.4°F).

What is the month with the highest UV index in Arutanga?

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

What time of the year is the hottest in Arutanga?

In Arutanga, March is the month with the highest recorded average temperatures, measuring a high of 27.9°C (82.2°F) and a low of 27.3°C (81.1°F).

What is the least humid month in Arutanga?

June is the least humid month in Arutanga, Cook Islands, with an average relative humidity of 76%.

What is the driest month in Arutanga?

The month with the least rainfall in Arutanga, Cook Islands, is June, when the rain falls for 14.5 days and typically collects 27mm (1.06") of precipitation.

What is the month with the shortest days in Arutanga?

With an average of 11h and 0min of daylight, June has the shortest days of the year in Arutanga.

What are the months with the lowest UV index in Arutanga?

June through September, with an average maximum UV index of 6, are months with the lowest UV index in Arutanga, Cook Islands.

What are the months with the coldest sea water in Arutanga?

July through October, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater in Arutanga, Cook Islands.

What are the months with the least sunshine in Arutanga?

The months with the least sunshine in Arutanga are July and October, with an average of 6.9h of sunshine.

What time of the year is the coldest in Arutanga?

August, on average, is the coldest month in Arutanga, registering a high temperature of 24.8°C (76.6°F) and a low of 23.8°C (74.8°F).

What is the most humid month in Arutanga?

November is the most humid month in Arutanga, with an average relative humidity of 79%.

What month has the most sunshine in Arutanga?

November has the most sunshine of the year in Arutanga, with an average of 8.9h of sunshine.

When are the longest days in Arutanga?

December has the longest days of the year, with an average of 13h and 12min of daylight.

Is there Daylight Saving Time (DST) in Arutanga?

Arutanga does not utilize Daylight Saving Time (DST). -10 timezone is used throughout the entire year.

Average temperature
Arutanga, Cook Islands

Average temperature - Arutanga, Cook Islands

The warmest month (with the highest average high temperature) is March (27.9°C).
The month with the lowest average high temperature is August (24.8°C).

The month with the highest average low temperature is March (27.3°C).
The coldest month (with the lowest average low temperature) is August (23.8°C).

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Average pressure
Arutanga, Cook Islands

Average pressure - Arutanga, Cook Islands

The month with the highest atmospheric pressure is September (1015.6mbar).
The month with the lowest atmospheric pressure is January (1009.8mbar).

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Average wind speed
Arutanga, Cook Islands

Average wind speed - Arutanga, Cook Islands

The windiest month (with the highest average wind speed) is July (26.2km/h).
The calmest month (with the lowest average wind speed) is March (19.3km/h).

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Average humidity
Arutanga, Cook Islands

Average humidity - Arutanga, Cook Islands

The month with the highest relative humidity is November (79%).
The month with the lowest relative humidity is June (76%).

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Average rainfall
Arutanga, Cook Islands

Average rainfall - Arutanga, Cook Islands

The wettest month (with the highest rainfall) is January (159mm).
The driest month (with the least rainfall) is June (27mm).

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Average rainfall days
Arutanga, Cook Islands

Average rainfall days - Arutanga, Cook Islands

The month with the highest number of rainy days is March (25.1 days).
The month with the least rainy days is November (13.2 days).

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Average sea temperature
Arutanga, Cook Islands

Average sea temperature - Arutanga, Cook Islands

The best months for swimming (with the highest average sea temperature) are January, February, March and April (28°C).
The coldest months (with the lowest average sea temperature) are July, August, September and October (26°C).

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Average daylight / Average sunshine
Arutanga, Cook Islands

Average daylight / Average sunshine - Arutanga, Cook Islands

The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 0min).

The month with the most sunshine is November (Average sunshine: 8h and 54min).
The months with the least sunshine are July and October (Average sunshine: 6h and 54min).

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Average sunshine days
Arutanga, Cook Islands

Average sunshine days - Arutanga, Cook Islands

The month with the most sunshine days is November (14.7 days).
The month with the least sunshine days is March (4 days).

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Average UV index
Arutanga, Cook Islands

Average UV index - Arutanga, Cook Islands

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

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Average visibility
Arutanga, Cook Islands

Average visibility - Arutanga, Cook Islands

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).

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Arutanga, Cook Islands

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