Weather in Nuku‘alofa in April

Tonga · 20-year averages, April

A good month. April is a solid month to be in Nuku‘alofa. You should expect rain on 18 days of the month, which is more days wet than dry.

Nuku‘alofa barely has seasons. April scores 65 out of 100 against a best of 78 in July — a gap small enough that the month you choose matters far less here than the week you choose.

Rain on 18 days, 5 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average April reaches 30 °C; the day barely swings — 0.7 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest April day reached 28.4 °C and the coldest night fell to 22.9 °C, and the wettest single day dropped 134 mm — roughly 79% of the month's rain in one day.

April is moderately variable: 27 mm in the driest year against 409 mm in the wettest, around an average of 170 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.

Wind sits around 20.8 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 80%, high enough to notice on the warm days without dominating them.

How April sits in the year

Temperatures hold steady either side: 27.2 °C in March, 26.5 here, 25.2 in May. Nothing about the timing within the month matters much.

Daylight in April

11.6 hours of daylight, losing 0.6 hours across the month. That is between Nuku‘alofa's extremes of 13.4 and 10.9 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 27.6 °C in April — warm enough that the water offers no relief from the heat. The sea peaks at 28.1 °C in February and bottoms out at 24.3 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

April in Nuku‘alofa versus nearby

If Nuku‘alofa is one option among several, the nearby comparison is worth making. Apia is the weaker option in April — 2.3 °C warmer, 5 days more rain. Avarua is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: April works, with July the better month by 13 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Nuku‘alofa

MonthHigh °CLow °CRain daysRain mmHumidity %Daylight hSea °CScore
January26.926 191978213.327.663
February27.426.6 181978112.828.162
March27.226.4 211968212.228.162
April26.525.7 181708011.627.665
May25.224.4 151127911.126.572
June24.223.4 131007810.925.676
July23.322.3 1367771124.778
August2322 14817811.424.375
September23.322.3 12837911.924.577
October2423 14887912.525.273
November24.823.9 151118013.125.972
December2625.1 171158013.426.867

See all twelve months in Nuku‘alofa, or where else to go in April.

Planning the rest of the trip

Built and maintained by Amit Sharma, Auckland, New Zealand. I build these sites so the answer is free and the data is public.

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