Vava'u (Vavau) weather in December
December in Vava'u: hot, soaked, with clean air — fine if you can take 18 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#6 of 12 months in Vava'u · #505 of 1413 destinations to visit in December · comfort 79/100 (tier B)
- Days
- 29°C
- Nights
- 23°C
- Wet days
- 18
- Sun
- 10.6 h
- Humidity
- 81%
- Daylight
- 13 h
Traveller notes on Vava'u in December
Other months in Vava'u
There isn't much March-specific detail for Vava'u on the forum, but the broader Tonga threads are useful context: posters consistently described April through August as the cool, dry, less humid stretch of the year, which by contrast puts March still inside the warmer, wetter season with a real chance of thunderstorms and heavy rain. One older thread mentioned March flight disruptions between the islands, a reminder that inter-island travel here can be weather-dependent this time of year. June/July got repeated mentions as the more reliably settled alternative.
Forum posters consistently name July through October as Tonga's best window overall, coinciding with whale-watching season and generally good weather - September sits comfortably within that stretch. Posters describe real day-to-day variability even during a good week: one detailed trip report logged mostly pleasant weather across ten days on the water, with just one day of heavy rain, one of light rain, and a couple of days with 3-6 foot swells. Posters note ocean water temperatures drop noticeably during these winter months, though Vava'u itself runs a bit warmer than more southern parts of Tonga. Posters generally recommend September specifically for whale swimming, with fewer crowds and good conditions reported compared to peak-season months.
Add your own note from Vava'u's card on the map.
Vava'u climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Vava'u in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonschool holidays in 4 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Vava'u's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherVava'u's best weather comes in July, September and November — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Vava'u in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Rule
Sunday is closed by law
1 Jan – 31 DecClosuresTonga keeps the Sabbath in law: shops, restaurants and most transport stop on Sunday and commercial trading is not permitted. Resorts feed their own guests; plan a Sunday of church, or of nothing. Source ↗
- Hazard
Cyclone season
1 Nov – 30 AprThe South Pacific season runs November to April, and the same sheltered water that suits the whales is where the charter fleet hides. Thunderstorms and humidity come with it either way. Source ↗
- Season
The empty months
1 Dec – 30 AprOff-season shutdownClosuresBetween December and April few people come and a good number of tour operators and restaurants simply shut. Cheap and very quiet, with the caveat that half of what you came for is not running. Source ↗
Where is Vava'u?
Vava'u in December — FAQ
- Is December a good time to visit Vava'u?
- December in Vava'u: hot, soaked, with clean air — fine if you can take 18 rainy days. It ranks #6 of 12 months for Vava'u on SeasonMap's comfort score (79/100).
- What is the weather like in Vava'u in December?
- In December, Vava'u averages a daily high of 29.3°C and a low of 23°C, with about 179.4 mm of rain over roughly 18.4 rainy days.
- What is the air quality in Vava'u in December?
- Vava'u has a mean US Air Quality Index of about 32 in December.