Climate and monthly weather forecastNgatiarua, Cook Islands

The climate of Ngatiarua

Ngatiarua, found in the Cook Islands, fits into the Köppen climate classification designated as Am, meaning tropical monsoon climate. This geographical position, located between the Tropic of Cancer and the Tropic of Capricorn, is influenced by warm air masses, guaranteeing a consistent temperature throughout the year and high levels of humidity.

The temperature levels in Ngatiarua shows modest variation over the year. From a low of 22.8°C (73°F) in August to a high of 27.7°C (81.9°F) in March. The least difference between the high and low temperatures, less than a 1°C (33.8°F) difference, occurs in February, March, and December. Humidity levels remain relatively consistent throughout the year registering between 76 to 79%.

Rainfall observed in Ngatiarua presents a dissimilar but discernible pattern. The wettest periods are typically around February, March, and December, where one can observe rainfall between 138mm (5.43") to 155mm (6.1"). It contrasts sharply with drier periods between May to September when rainfall dips to a low record of 29mm (1.14") in August. Sunshine hours per day float between 5.7 hours in June and 8.9 hours in November, and wind speeds vary between 20.4km/h (12.7mph) to 25km/h (15.5mph). These climatological facets together fabricate the unique weather conditions of Ngatiarua.

The best time to visit Ngatiarua

Considering the climate conditions discussed above, June through August appears as the best period to visit Ngatiarua. During these months, rainfall is at its lowest levels, registering between 29mm (1.14") to 38mm (1.5"), with an average of 10 to 14 days of rainfall per month. Sunshine hours per day range from 5.7 hours to 7 hours, which, although lower than other periods, is still ample for enjoying the outdoors. The temperature during this period ranges between 23.8°C (74.8°F) to 25°C (77°F), which is relatively lower than other parts of the year but still warm for outdoor activities.

The worst time to visit Ngatiarua

The period from January to March is arguably the worst time for a visit to Ngatiarua, as this is when the highest levels of rainfall occur, with an average of 138mm (5.43") to 155mm (6.1"). The number of days with rainfall ranges from 20 to 24 days per month during this time. Although the temperature is at its highest, hovering around 27.2°C (81°F) to 27.7°C (81.9°F), the frequent showers may limit outdoor explorations.

Spring weather in Ngatiarua

From September to November, Ngatiarua experiences its spring season. During this time, temperatures slowly climb from 23.8°C (74.8°F) in September to 25.5°C (77.9°F) in November. A steady increase in rainfall is also noticeable, starting with 30mm (1.18") in September to 74mm (2.91") in November. To put this into perspective, the number of days with rainfall hover around 12 to 16 days per month.

Summer weather in Ngatiarua

December through February marks the summer season in Ngatiarua. Amidst these months, temperatures scale their peak, reaching up to 27.7°C (81.9°F) in February. Alongside, the summer months are also the rainiest, with rainfall levels oscillating between 138mm (5.43") and 155mm (6.1"). It ensures higher humidity, peaking at 78% to 79%.

Autumn weather in Ngatiarua

During the autumn months from March to May, there is an evident decline in temperature. It goes down from 27.3°C (81.1°F) in March to 25°C (77°F) in May. Correspondingly, rainfall levels drop, with May experiencing as low as 99mm (3.9") of rain. This decrease in rainfall culminates in lowered humidity levels, hovering around 77% to 78%.

Winter weather in Ngatiarua

Winter in Ngatiarua, which extends from June to August, exhibits lower temperatures and decreased rainfall. Temperatures maintain between 23.8°C (74.8°F) and 25°C (77°F). Rainfall is at its lowest, with August seeing as little as 29mm (1.14"). Despite the lower rainfall, humidity levels remain relatively high, between 76% and 77%, due to the overall tropical climate conditions.

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. Weather in January »

Weather in February

Moving to February, the weather in Ngatiarua exhibits minor differences compared to the preceding month. Despite lower rainfall amounts, the climate remains warm and humid throughout the month. Visitors can enjoy an average of 12.7 hours of daylight, providing ample opportunity to explore the gorgeous island landscapes. Weather in February »

Weather in March

In March, Ngatiarua's climate experiences subtle changes. Compared to February, the temperature range shifts slightly higher, accompanied by a consistent wind speed that provides a refreshing escape from the heat. It becomes increasingly important for locals and visitors to protect themselves due to the high UV index in March. Weather in March »

Weather in April

As Ngatiarua transitions into April, there are slight decreases in temperature and rainfall, providing a break from March's intense weather patterns. The introduction of longer daylight hours allows residents and tourists to engage in outdoor activities for extended periods. Weather in April »

Weather in May

May in Ngatiarua signals the start of mild alterations in the weather. Noticeable shifts in temperatures indicate a gradual decline, making the atmosphere slightly cooler. Despite the drop in temperature, daylight hours continue to shrink, creating extended evenings that locals can enjoy. Weather in May »

Weather in June

June signifies the midpoint of the year in Ngatiarua and brings with it a significant drop in rainfall. Concurrently, the daylight hours reduce further, resulting in longer evenings that offer a serene experience to its inhabitants. Weather in June »

Weather in July

Transitioning into July, Ngatiarua experiences a near-constant temperature with minor fluctuations. Moreover, this month brings with it an extension in daylight hours, signifying the start of brighter days ahead. The availability of ample sunlight combined with relatively low rainfall makes July an excellent month for outdoor activities. Weather in July »

Weather in August

The weather in August at Ngatiarua sees a continuation of July's trends, but with a slight dip in temperatures. There is a noticeable improvement in daylight hours, allowing visitors to explore the island's beautiful landscapes for longer. Weather in August »

Weather in September

September in Ngatiarua greets residents with consistent temperatures and a surge in rainfall. The increase in showers doesn't disrupt outdoor activities, as the rainfall is primarily concentrated in quick, short sessions. Longer daylight hours combined with clear visibility allow for scenic views of the island and its picturesque surroundings. Weather in September »

Weather in October

In October, Ngatiarua experiences a noticeable rise in temperature, signaling a transition towards a warmer climate. This increase, however, doesn't lead to uncomfortable conditions, as the relative humidity remains steady. The bright sunshine allows for a myriad of outdoor activities, with clear skies promising undisturbed views of the island's stunning topography. Weather in October »

Weather in November

As Ngatiarua steps into November, the weather continues to remain warm, with a constant increase in daylight hours. Despite the rise in temperature, the weather remains pleasant, primarily due to the drop in relative humidity. Weather in November »

Weather in December

Closing the year, December's weather in Ngatiarua substantially resembles conditions seen in November, with a slight increase in humidity and rainfall. Consistently warm temperatures combined with a high humidity index can make the weather feel increasingly muggy. Weather in December »