Climate averages 1991–2020
Barreiras weather
in May.
A hot, fairly dry month: the 6th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Barreiras: daytime highs average 30.4°C and nights cool to about 20.9°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 18 mm of rain on roughly 3 days, which makes May a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 34 min on an average May day.
The nearest other city in this atlas is Luis Eduardo Magalhães (87 km away). In May its highs average 28.2°C, 2.1°C cooler than Barreiras, with 20 mm of rain.
Among the 448 cities listed in Brazil, Barreiras ranks 18th of 448 for the warmest May highs and joint 22nd of 448 for the driest May (rainfall, lowest first). The mean May high of those 448 cities is 25.3°C; Barreiras is 5.1°C warmer than that mean.
From May to June, average highs fall by 0.2°C to 30.1°C, and monthly rainfall falls from 18 mm to 1.5 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
Barreiras climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.2°C21.8°C | 21.8°C | 139 | 16.4 | 12.713 h |
| February | 30.1°C21.7°C | 21.7°C | 123 | 15.8 | 12.512 h |
| March | 30.1°C21.7°C | 21.7°C | 142 | 16.5 | 12.212 h |
| April | 30.2°C21.6°C | 21.6°C | 68 | 10.2 | 11.812 h |
| May, selected | 30.4°C20.9°C | 20.9°C | 18 | 3.1 | 11.612 h |
| June | 30.1°C19.8°C | 19.8°C | 1.5 | 0.3 | 11.411 h |
| July | 30.2°C19.0°C | 19.0°C | 0.2 | 0.0 | 11.511 h |
| August | 31.7°C19.6°C | 19.6°C | 0.5 | 0.1 | 11.712 h |
| September | 33.8°C21.6°C | 21.6°C | 8.2 | 1.1 | 12.012 h |
| October | 34.1°C23.1°C | 23.1°C | 51 | 6.5 | 12.412 h |
| November | 31.3°C22.5°C | 22.5°C | 154 | 14.1 | 12.713 h |
| December | 30.7°C22.0°C | 22.0°C | 143 | 14.7 | 12.813 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
- Luis Eduardo Magalhães in MayBrazil · 87 kmHigh 28.2°C · Low 19.0°C · 20 mm rain
- Guanambi in MayBrazil · 332 kmHigh 29.5°C · Low 20.1°C · 4.6 mm rain
- Irecê in MayBrazil · 354 kmHigh 28.7°C · Low 19.4°C · 11 mm rain
- Palmas in MayBrazil · 426 kmHigh 31.6°C · Low 22.7°C · 55 mm rain
- Brumado in MayBrazil · 426 kmHigh 29.0°C · Low 20.2°C · 13 mm rain
- Janaúba in MayBrazil · 445 kmHigh 29.3°C · Low 19.7°C · 6.6 mm rain
- Gurupi in MayBrazil · 446 kmHigh 31.6°C · Low 22.9°C · 28 mm rain
- Formosa, Brazil in MayBrazil · 454 kmHigh 26.7°C · Low 17.4°C · 14 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 Barreiras) is explained once on the Barreiras year overview and on the Sources, method and limits page.