Weather in Avarua in May

A good month. May works. It is not the peak, but nothing about it fights you. You should expect rain on 17 days of the month, which is more days wet than dry.

May ranks 7 of 12 in Avarua: past the worst of the year but short of June, which is the month to book if the dates are open.

Rain on 17 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 May reaches 30 °C; the day barely swings — 0.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest May day reached 27.7 °C and the coldest night fell to 21.9 °C, and the wettest single day dropped 64 mm — roughly 43% of the month's rain in one day.

May is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest May on record still delivered 294 mm against 31 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 150 mm average is a reasonable planning figure, not a promise.

Wind sits around 19.4 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 79%, high enough to notice on the warm days without dominating them.

How May sits in the year

Temperatures hold steady either side: 26.6 °C in April, 25.6 here, 24.5 in June. Nothing about the timing within the month matters much. Rain is the thing that moves: June brings 6 days less of it, so pushing the dates later buys drier weather.

Daylight in May

May sits at the dark end of Avarua's year — 11.1 hours of daylight against 13.4 at midsummer, losing 0.4 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 26.7 °C in May — warm enough to stay in as long as you like. The sea peaks at 28.1 °C in March and bottoms out at 24.8 °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.

May in Avarua versus nearby

If Avarua is one option among several, the nearby comparison is worth making. Vaitape is close enough to be a coin toss — 2.1 °C warmer, 2 days less rain. Faaa is close enough to be a coin toss — within a degree on temperature, 3 days less rain.

So: May works, with June the better month by 15 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Avarua

See all twelve months in Avarua, or where else to go in May.