Weather in Avarua in January

Shoulder season. January sits in between. You will get good days and you will lose some. You should expect rain on 19 days of the month, which is more days wet than dry.

January ranks 12 of 12 — near the bottom of Avarua's year. June is the month that works, and the swing between the two is 18 points, which is a different holiday rather than a slightly better one.

Rain on 19 days, 6 of them heavy. Enough to need a plan B, not enough to need a plan around it. Natural fibres and a second shirt for the day. At 82% nothing dries, including you.

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 January 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 January day reached 29.4 °C and the coldest night fell to 23.4 °C, and the wettest single day dropped 63 mm — roughly 32% of the month's rain in one day.

January is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest January on record still delivered 401 mm against 70 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 195 mm average is a reasonable planning figure, not a promise.

Wind sits around 19 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 82%, high enough to notice on the warm days without dominating them.

How January sits in the year

Temperatures hold steady either side: 25.9 °C in December, 26.7 here, 27.1 in February. Nothing about the timing within the month matters much.

Daylight in January

January is at or near the longest days of Avarua's year: 13.3 hours of daylight, holding steady all month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 27.6 °C in January — warm enough that the water offers no relief from the heat. 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.

January 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 — within a degree on temperature, 4 days more rain. Faaa is close enough to be a coin toss — within a degree on temperature, 4 days more rain.

So: January works, with June the better month by 18 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 January.