Boa Vista climate
Boa Vista (Roraima, Brazil) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 28 °C83 °F, and about 1,471 mm58 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Boa Vista climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3595 | 2475 | 2985 | 281.1 |
| Feb | 3697 | 2476 | 3086 | 271.1 |
| Mar | 3697 | 2577 | 3087 | 391.5 |
| Apr | 3493 | 2476 | 2984 | 1275.0 |
| May | 3187 | 2374 | 2781 | 27811 |
| Jun | 3085 | 2373 | 2679 | 28111 |
| Jul | 3085 | 2272 | 2679 | 25310.0 |
| Aug | 3087 | 2373 | 2780 | 1787.0 |
| Sep | 3289 | 2374 | 2781 | 843.3 |
| Oct | 3391 | 2474 | 2883 | 682.7 |
| Nov | 3392 | 2475 | 2984 | 562.2 |
| Dec | 3493 | 2475 | 2984 | 522.1 |
| Year | 3697 | 2272 | 2883 | 1,47158 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 58% | 56% | 5.2 | 11:58 |
| Feb | 55% | 65% | 5.2 | 12:02 |
| Mar | 55% | 64% | 5.3 | 12:06 |
| Apr | 66% | 73% | 5.0 | 12:11 |
| May | 81% | 78% | 4.4 | 12:15 |
| Jun | 85% | 73% | 4.6 | 12:17 |
| Jul | 85% | 69% | 4.8 | 12:16 |
| Aug | 84% | 64% | 5.3 | 12:12 |
| Sep | 80% | 56% | 5.9 | 12:08 |
| Oct | 75% | 59% | 5.8 | 12:03 |
| Nov | 71% | 62% | 5.3 | 11:59 |
| Dec | 66% | 60% | 4.9 | 11:58 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Boa Vista is like
The warmest month is March, with an average high of 36 °C97 °F and a low of 25 °C77 °F. The coldest is July, when highs average 30 °C85 °F and lows 22 °C72 °F. Seasonal differences are small — just 4.5 °C8.1 °F between the warmest and the coolest month.
It is wet, with about 1,471 mm58 in of precipitation per year. The wettest three-month stretch is May–July, which brings 55% of the annual total. The wettest month is June (281 mm11 in), the driest is February (27 mm1.1 in).
Relative humidity ranges from 55% in March to 85% in July. The clearest skies (lowest average cloud amount, 56%) are typical of January. Average wind speed near the ground ranges from 5 km/h (3 mph) in July to 13 km/h (8 mph) in February.
Best time to visit Boa Vista
Based on these averages, the most comfortable months for sightseeing and outdoor activities are September–December: average highs of 32 °C89 °F to 34 °C93 °F with 52 mm2.1 in to 84 mm3.3 in of precipitation per month.
The most challenging month is May, which is hot, with average highs of 31 °C87 °F, very wet (278 mm11 in) and humid (81% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Boa Vista
- Wetter months (April–August) — highs 3085 to 34 °C93 °F, lows 2272 to 24 °C76 °F, about 223 mm8.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (September–March) — highs 3289 to 36 °C97 °F, lows 2374 to 25 °C77 °F, about 51 mm2.0 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Boa Vista compares
Of the 223 places in Brazil covered by World Climates, Boa Vista is the 3rd warmest by annual mean temperature and the 59th wettest by annual precipitation. See all of them on the Brazil climate page.
Places in other countries with the most similar temperature and rainfall pattern: Puerto Carreño (Colombia, Aw), Arauca (Colombia, Aw) and Guanare (Venezuela, Aw).
Nearby places
- Georgetown 524 km · 27 °C81 °F · 2,302 mm91 in
- Upata 609 km · 26 °C79 °F · 1,094 mm43 in
- Ciudad Guayana 652 km · 27 °C81 °F · 1,110 mm44 in
- Manaus 662 km · 27 °C81 °F · 1,959 mm77 in
- Ciudad Bolívar 670 km · 29 °C84 °F · 977 mm38 in
- Manacapuru 680 km · 27 °C81 °F · 2,006 mm79 in
- Paramaribo 698 km · 27 °C80 °F · 1,744 mm69 in
- Itacoatiara 708 km · 27 °C81 °F · 2,077 mm82 in
Frequently asked questions
What is the warmest month in Boa Vista?
March is the warmest month in Boa Vista, with an average high of 36 °C (97 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Boa Vista?
July is the coldest month, with an average high of 30 °C (85 °F) and an average low of 22 °C (72 °F).
When does it rain the most in Boa Vista?
June is the wettest month with about 281 mm (11.0 in) of precipitation; February is the driest with about 27 mm (1.1 in).
What is the best time to visit Boa Vista?
Judging by long-term averages, the most comfortable months are September–December.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.