Climate and monthly weather forecast
Alofi, Niue

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The stunning view of the Hikutavake Reef in Alofi, Niue
The stunning view of the Hikutavake Reef in Alofi, Niue

The climate of Alofi

Alofi, the capital of Niue, possesses a Tropical rainforest climate according to the Köppen climate classification. The geographical location of this island in the South Pacific lends itself to a climate largely ruled by high temperatures and humidity, alongside copious rainfall. The monthly average temperatures in Alofi fluctuate narrowly between 24.6C to 28C, showcasing the region's consistent tropical climate.

An examination of the climatological data reveals minimal variation in temperature across the year, with the highest average high temperature peaking at 28C in March, and the lowest average high reaching 24.6C in August. However, a substantial difference can be noted in rainfall patterns. While precipitation is a recurring event throughout the year, February and December experience the highest average rainfall at 202mm (7.95") and 130mm (5.12") respectively. In contrast, June experiences the lowest average rainfall with 50mm (1.97").

Relative humidity factors between 77% and 79%, contributing to the tropical, moist environment. Sea temperatures range from 25C to 28C, supporting a thriving marine ecosystem. The wind is another influencing component, with speeds varying between 19.8km/h (12.3mph) to 27.2km/h (16.9mph). With cloud cover averaging at around 51%, Alofi seldom experiences clear skies.

The best time to visit Alofi

Despite the year-round tropical climate, ideal conditions for a visit to Alofi are found between May and October. This period offers a relatively lower average rainfall ranging from 50mm (1.97") to 76mm (2.99"), limiting interruptions to outdoor exploration. Moreover, temperatures during this time hover between 24.6C to 26.6C, presenting a more manageable heat for outdoor enthusiasts. Daylight hours are balanced, yielding suitable conditions for sightseeing activities. Of particular note is October, which boasts the highest average hours of sunshine, 7.8 hours.

The worst time to visit Alofi

On the other end of the spectrum, the months of February, March, and December present less favorable conditions for a visit to Alofi. These are the months with the highest rainfall, with totals averaging between 130mm (5.12") to 202mm (7.95"), that may hinder outdoor activities. Accompanied by high temperatures, reaching up to 28C, the region experiences its most intense weather during these months.

Spring weather in Alofi

In Alofi, the spring months, September to November, experience temperatures from 24.7C to 27.8C. September exhibits the least rainfall in spring with an average of 52mm (2.05"), while November sees a slight increase, averaging at 62mm (2.44"). The average sea temperature ranges from 25C in September to 26C in November, creating conducive conditions for water-sports. Average daily sunshine hours fluctuate from 6.7 hours in September to 7.6 hours in November, providing ample daylight for outdoor pursuits.

Summer weather in Alofi

The summer months of December to February mark a period of increased rainfall, with December reaching the year’s peak at 202mm (7.95"). Despite the increased rainfall, these months also see high temperatures, with February being the warmest on average with 27.9C. In terms of sunshine hours, December experiences shorter days with 7.6 hours, while February registers 7.1 hours.

Autumn weather in Alofi

From March through May, average temperatures in Alofi decline gradually from 28C to 26.6C. Alongside the descending temperatures, rainfall totals also decrease significantly from 130mm (5.12") in March to a yearly low of 90mm (3.54") in May. This drop in rainfall is echoed by an increase in sunshine hours, with May enjoying 5.3 hours of sunlight per day.

Winter weather in Alofi

Winter in Alofi, spanning from June to August, encounters temperatures ranging from 24.6C in August to 26C in June. Rainfall during this period is relatively low, with an average of 50mm (1.97") in June, the driest month of the year. Average sea temperatures are lower than the annual average, descending to 25C as the season progresses. Despite lower temperatures and rainfall, this season displays the shortest days of the year, with daylight hours averaging 11 hours.

Weather in January

With high humidity levels at 79%, January in Alofi, Niue is a markedly humid month. Typical for the summer season, both temperatures and rainfall remain high creating a lush, tropical atmosphere. Barring December, the rainfall in January tops the chart at 202mm (7.95"). Weather in January »

Weather in February

Entering February, Alofi's weather undergoes marginal changes, registering a slight decrease in rain and humidity. February, much akin to its predecessor, continues with warm temperatures. Winds blow a tad stronger than in January, reaching speeds of 24.4km/h (15.2mph). Weather in February »

Weather in March

March brings about a transition to a less humid climate with relatively decreased rainfall. The weather in Alofi, Niue in March still showcases warm temperatures with a slightly cooler sea temperature of 28°C (82.4°F). This month registers lesser rainfall, marking the onset of a less rainy season ahead. Weather in March »

Weather in April

Alofi, Niue in April experiences a further dip in temperatures and rainfall amounts; a notable shift towards drier weather is observed. Rainfall, dramatically less than the initial months of the year, measures only 108mm (4.25"). Weather in April »

Weather in May

Arriving in May, Alofi witnesses the full onset of the cooler season with lower temperatures and significantly reduced rainfall. Cloud cover increases compared with the preceding month. The sunshine hours notably decrease with an average of only 5.3 hours of sunshine per day. Weather in May »

Weather in June

Alofi in June experiences drier conditions with a minimal 50mm (1.97") of rainfall. Wind speeds turn more pronounced, reaching up to 28km/h (17.4mph). Daylight hours hover around a low of 11 hours daily, indicating a peak in the cooler season. Weather in June »

Weather in July

Entering July, Alofi experiences a leveled climate characterized by a nominal rise in rainfall and lower temperatures. July registers the lowest sea temperature of the year at 25°C (77°F), a slight dip from the preceding month. The duration of sunshine hours per day remains stable. Weather in July »

Weather in August

Transitioning into August, Alofi, Niue manifests a slight increase in rainfall and lower temperatures. The sea temperature maintains a steady 25°C (77°F). The amount of sunshine received per day increases gradually, indicating a shift towards the warmer part of the year. Weather in August »

Weather in September

September in Alofi marks the advent of a warmer weather trend with minimal rainfall. Slight fluctuations in temperature hint at the return of the warmer months. The city's humidity rebounds to reach 79%, signifying a return to typical tropical weather. Weather in September »

Weather in October

October sees Alofi transitioning into a warmer phase with a rise in temperature levels and humidity. The rainfall totals to 76mm (2.99"), a considerable increase from the previous month. The days grow longer with increasing sunshine hours, signalling the onset of warmer months. Weather in October »

Weather in November

November’s weather in Alofi, Niue presents an interesting mix of conditions. While temperatures continue to climb, the city registers the least rainfall activity of the year with only 62mm (2.44"). As the sea temperature ascends to a pleasant warmth, so does the duration of daylight hours. Weather in November »

Weather in December

December in Alofi witnesses appreciable shifts in weather patterns as the city welcomes its warmest month. The month enjoys the longest daylight duration of 13.3 hours per day. Shifting into full summer mode, the city experiences an increase in rainfall, reaching 130mm (5.12"). Weather in December »

Frequently asked questions

What are the most humid months?

The months with the highest humidity are January, September and November, with an average relative humidity of 79%.

What is the wettest month?

The month with the most rainfall is January, when the rain falls for 24.4 days and typically aggregates up to 202mm (7.95") of precipitation.

How much does it rain?

In Alofi, during the entire year, the rain falls for 229.1 days and collects up to 1209mm (47.6") of precipitation.

What are the months with the warmest sea water?

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

When is the highest UV index in Alofi?

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

What month is the hottest?

In Alofi, March records the average highest temperatures, peaking at 28°C (82.4°F) and reaching a low of 27.2°C (81°F).

What are the least humid months?

March, April, June through August, with an average relative humidity of 77%, are the least humid months in Alofi.

What is the driest month?

The month with the least rainfall is June, when the rain falls for 15.6 days and typically collects 50mm (1.97") of precipitation.

What is the month with the shortest days in Alofi?

The month with the shortest days is June, with an average of 11h and 0min of daylight.

What is the month with the least sunshine?

The month with the least sunshine is June, with an average of 5.2h of sunshine.

When is the lowest UV index?

The months with the lowest UV index are June through October, with an average maximum UV index of 6.

What are the months with the coldest sea water?

The months with the coldest seawater are July through October, with an average sea temperature of 25°C (77°F).

What is the coldest time of year?

August, with average temperatures reaching a high of 24.6°C (76.3°F) and a low of 23.4°C (74.1°F), is the coldest month.

When are the longest days?

With an average of 13h and 18min of daylight, December has the longest days of the year.

Is there Daylight Saving Time (DST)?

Alofi does not utilize Daylight Saving Time (DST). -11 timezone is used over the entire year.

What month has the most sunshine?

With an average of 8.5h of sunshine, December has the most sunshine of the year.

Average temperature
Alofi, Niue

Average temperature - Alofi, Niue

The warmest month (with the highest average high temperature) is March (28°C).
The month with the lowest average high temperature is August (24.6°C).

The month with the highest average low temperature is March (27.2°C).
The coldest month (with the lowest average low temperature) is August (23.4°C).

Average pressure
Alofi, Niue

Average pressure - Alofi, Niue

The months with the highest atmospheric pressure are August and September (1015.2mbar).
The month with the lowest atmospheric pressure is January (1008.4mbar).

Average wind speed
Alofi, Niue

Average wind speed - Alofi, Niue

The windiest month (with the highest average wind speed) is June (27.2km/h).
The calmest month (with the lowest average wind speed) is March (19.8km/h).

Average humidity
Alofi, Niue

Average humidity - Alofi, Niue

The months with the highest relative humidity are January, September and November (79%).
The months with the lowest relative humidity are March, April, June, July and August (77%).

Average rainfall
Alofi, Niue

Average rainfall - Alofi, Niue

The wettest month (with the highest rainfall) is January (202mm).
The driest month (with the least rainfall) is June (50mm).

Average rainfall days
Alofi, Niue

Average rainfall days - Alofi, Niue

The month with the highest number of rainy days is January (24.4 days).
The month with the least rainy days is November (14.8 days).

Average sea temperature
Alofi, Niue

Average sea temperature - Alofi, Niue

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 (25°C).

Average daylight / Average sunshine
Alofi, Niue

Average daylight / Average sunshine - Alofi, Niue

The month with the longest days is December (Average daylight: 13h and 18min).
The month with the shortest days is June (Average daylight: 11h and 0min).

The month with the most sunshine is December (Average sunshine: 8h and 30min).
The month with the least sunshine is June (Average sunshine: 5h and 12min).

Average sunshine days
Alofi, Niue

Average sunshine days - Alofi, Niue

The month with the most sunshine days is November (13 days).
The month with the least sunshine days is February (2.9 days).

Average UV index
Alofi, Niue

Average UV index - Alofi, Niue

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

Average visibility
Alofi, Niue

Average visibility - Alofi, Niue

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).

Alofi, Niue

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