Boa Vista weather in December
In December, Boa Vista has daytime highs averaging 32 °C, nights around 24 °C, with 10 wet days. Figures are 1991–2020 climate normals.
- 31.6°C Average high
- 24.1°C Average low
- 10days Wet days
- 63mm Rainfall
- 12h 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 | 31.8 °C | 24.2 °C | 32 % |
| 11–20 December | 31.7 °C | 24.2 °C | 37 % |
| 21–31 December | 31.4 °C | 24.1 °C | 31 % |
- Rain is most likely over days 11–20 of December (37 % of days) and least likely over days 21–31 (31 %).
What to expect
| Measure | Typical December | Share of the month |
|---|---|---|
| Days above 25 °C | 31 of 31 | 100 % |
| Days above 30 °C | 26 of 31 | 82 % |
| Days below 0 °C | 0 of 31 | 0 % |
| Days with more than 1 mm rain | 10 of 31 | 33 % |
Conditions in December
| Measure | Average |
|---|---|
| Mean temperature | 27 °C |
| Record high (1991–2020) | 36 °C |
| Record low (1991–2020) | 22 °C |
| Relative humidity | 71 % |
| Wind speed | 15 km/h |
| Cloud cover | 69 % |
Where Boa Vista ranks in December
| Ranking | Position | Value |
|---|---|---|
| The warmest places in South America in December | 16thof 50 | 32 °C |
December compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 32.2 °C | 34 mm | 68 % |
| February | 32.6 °C | 31 mm | 70 % |
| October | 31.8 °C | 81 mm | 63 % |
| November | 31.6 °C | 97 mm | 70 % |
| December | 31.6 °C | 63 mm | 69 % |
See all twelve months for Boa Vista
- December is the 6th warmest month here.
- It is the 3rd driest month of the year.
- It ranks 5th for least cloud cover.
- Days last about 12 hours from sunrise to sunset.
- It rains on 10 of 31 days — 33 % of the month.
- Nights are about 7.4 °C cooler than the middle of the day.
- The hottest December day on record since 1991 reached 36 °C, 4.1 °C above the usual daytime high.
Nearby destinations in December
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| Boa Vista | 32 °C | 10 | – |
| Georgetown | 27 °C | 27 | 28 |
| Paramaribo | 28 °C | 23 | 27 |
QuestionsDecember in Boa Vista, answered
How warm is Boa Vista in December?
Daily highs average 32 °C and nights fall to about 24 °C, a spread of 7.4 °C between afternoon and dawn. That makes December the 5th warmest month of the year here.
Does it rain much in Boa Vista in December?
December averages 63 mm of rain, spread over about 10 of the 31 days — 33 % of the month. Cloud cover averages 69 % of the sky.
How long are the days in December?
Boa Vista averages 12 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.