Climate averages 1991–2020
Boa Vista weather
in May.
A hot, very wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Boa Vista: daytime highs average 28.8°C and nights cool to about 23.2°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 343 mm of rain on roughly 26 days, which makes May a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average May day.
The nearest other city in this atlas is Georgetown (524 km away). In May its highs average 27.7°C, 1.2°C cooler than Boa Vista, with 253 mm of rain.
Among the 448 cities listed in Brazil, Boa Vista ranks joint 82nd of 448 for the warmest May highs and 445th of 448 for the driest May (rainfall, lowest first). The mean May high of those 448 cities is 25.3°C; Boa Vista is 3.5°C warmer than that mean.
From May to June, average highs fall by 0.6°C to 28.3°C, and monthly rainfall falls from 343 mm to 310 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Boa Vista climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.1°C24.1°C | 24.1°C | 34 | 6.7 | 12.012 h |
| February | 32.5°C24.3°C | 24.3°C | 31 | 5.8 | 12.012 h |
| March | 33.0°C24.6°C | 24.6°C | 59 | 9.1 | 12.112 h |
| April | 31.1°C24.0°C | 24.0°C | 200 | 17.4 | 12.212 h |
| May, selected | 28.8°C23.2°C | 23.2°C | 343 | 26.4 | 12.212 h |
| June | 28.3°C22.7°C | 22.7°C | 310 | 27.3 | 12.312 h |
| July | 28.3°C22.4°C | 22.4°C | 249 | 26.7 | 12.312 h |
| August | 29.3°C22.7°C | 22.7°C | 156 | 22.2 | 12.212 h |
| September | 30.8°C23.2°C | 23.2°C | 94 | 15.4 | 12.112 h |
| October | 31.8°C23.8°C | 23.8°C | 71 | 12.8 | 12.112 h |
| November | 31.6°C24.0°C | 24.0°C | 90 | 13.6 | 12.012 h |
| December | 31.5°C24.1°C | 24.1°C | 58 | 10.3 | 12.012 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Georgetown in MayGuyana · 524 kmHigh 27.7°C · Low 24.7°C · 253 mm rain
- Upata in MayVenezuela · 609 kmHigh 31.1°C · Low 22.4°C · 103 mm rain
- Ciudad Guayana in MayVenezuela · 652 kmHigh 31.9°C · Low 23.6°C · 106 mm rain
- Manaus in MayBrazil · 662 kmHigh 29.0°C · Low 23.9°C · 312 mm rain
- Ciudad Bolívar in MayVenezuela · 670 kmHigh 32.9°C · Low 24.4°C · 139 mm rain
- Manacapuru in MayBrazil · 680 kmHigh 28.5°C · Low 24.1°C · 372 mm rain
- Paramaribo in MaySuriname · 698 kmHigh 29.0°C · Low 24.0°C · 258 mm rain
- Itacoatiara in MayBrazil · 708 kmHigh 28.7°C · Low 24.3°C · 277 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Boa Vista) is explained once on the Boa Vista year overview and on the Sources, method and limits page.