Mata-Utu weather in December
In December, Mata-Utu has daytime highs averaging 28 °C, nights around 26 °C, with 25 wet days, and a sea temperature of 29 °C. Figures are 1991–2020 climate normals.
- 27.9°C Average high
- 26.2°C Average low
- 25days Wet days
- 321mm Rainfall
- 29.2°C Sea temperature
- 13h Daylight
Daily temperatures through December
How December develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 December | 27.8 °C | 26.0 °C | 83 % |
| 11–20 December | 28.0 °C | 26.2 °C | 79 % |
| 21–31 December | 28.0 °C | 26.3 °C | 81 % |
What to expect
| Measure | Typical December | Share of the month |
|---|---|---|
| Days above 25 °C | 31 of 31 | 100 % |
| Days above 30 °C | 0 of 31 | 0 % |
| Days below 0 °C | 0 of 31 | 0 % |
| Days with more than 1 mm rain | 25 of 31 | 81 % |
Conditions in December
| Measure | Average |
|---|---|
| Mean temperature | 27 °C |
| Record high (1991–2020) | 30 °C |
| Record low (1991–2020) | 25 °C |
| Relative humidity | 83 % |
| Wind speed | 25 km/h |
| Cloud cover | 77 % |
Where Mata-Utu ranks in December
| Ranking | Position | Value |
|---|---|---|
| Warmest sea temperatures in the world in December | 31st of 50 | 29 °C |
December compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 28.0 °C | 357 mm | 80 % |
| February | 28.0 °C | 328 mm | 79 % |
| October | 27.3 °C | 218 mm | 64 % |
| November | 27.7 °C | 261 mm | 71 % |
| December | 27.9 °C | 321 mm | 77 % |
See all twelve months for Mata-Utu
- December is the 5th warmest month here.
- It is the 10th driest month of the year.
- It ranks 10th for least cloud cover.
- Days last about 13 hours from sunrise to sunset.
- It rains on 25 of 31 days — 81 % of the month.
- Nights are about 1.7 °C cooler than the middle of the day.
- The hottest December day on record since 1991 reached 30 °C, 1.9 °C above the usual daytime high.
- Beach score: 69 / 100 — see how this is calculated.
QuestionsDecember in Mata-Utu, answered
How warm is Mata-Utu in December?
Daily highs average 28 °C and nights fall to about 26 °C, a spread of 1.7 °C between afternoon and dawn. That makes December the 6th warmest month of the year here.
Does it rain much in Mata-Utu in December?
December averages 321 mm of rain, spread over about 25 of the 31 days — 81 % of the month. Cloud cover averages 77 % of the sky.
Is the sea warm enough to swim in December?
The sea averages 29 °C off Mata-Utu in December. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in December?
Mata-Utu averages 13 hours between sunrise and sunset in December. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.