Climate averages 1991–2020
Fortaleza weather
in May.
A hot, wet month: the joint 8th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Fortaleza: daytime highs average 28.9°C and nights cool to about 24.7°C. By daytime temperature it is the joint 8th warmest of the 12 months.
Expect about 129 mm of rain on roughly 20 days, which makes May a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average May day.
The nearest other city in this atlas is Caucaia (12 km away). In May its highs average 28.9°C, about as warm as Fortaleza, with 95 mm of rain.
Among the 448 cities listed in Brazil, Fortaleza ranks joint 78th of 448 for the warmest May highs and joint 371st of 448 for the driest May (rainfall, lowest first). The mean May high of those 448 cities is 25.3°C; Fortaleza is 3.6°C warmer than that mean.
From May to June, average highs fall by 0.1°C to 28.8°C, and monthly rainfall falls from 129 mm to 72 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
Fortaleza climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C24.9°C | 24.9°C | 94 | 18.2 | 12.312 h |
| February | 28.9°C24.7°C | 24.7°C | 134 | 20.4 | 12.212 h |
| March | 28.7°C24.6°C | 24.6°C | 194 | 25.4 | 12.112 h |
| April | 28.5°C24.5°C | 24.5°C | 248 | 25.4 | 12.012 h |
| May, selected | 28.9°C24.7°C | 24.7°C | 129 | 19.6 | 11.912 h |
| June | 28.8°C24.3°C | 24.3°C | 72 | 13.7 | 11.912 h |
| July | 29.2°C24.0°C | 24.0°C | 36 | 7.7 | 11.912 h |
| August | 30.1°C24.1°C | 24.1°C | 8.0 | 2.3 | 12.012 h |
| September | 30.2°C24.4°C | 24.4°C | 3.6 | 1.2 | 12.112 h |
| October | 30.2°C24.9°C | 24.9°C | 4.8 | 1.6 | 12.212 h |
| November | 30.3°C25.2°C | 25.2°C | 6.9 | 2.3 | 12.312 h |
| December | 30.0°C25.3°C | 25.3°C | 27 | 8.5 | 12.312 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
- Caucaia in MayBrazil · 12 kmHigh 28.9°C · Low 24.6°C · 95 mm rain
- Maracanaú in MayBrazil · 20 kmHigh 29.5°C · Low 24.0°C · 100 mm rain
- Eusébio in MayBrazil · 22 kmHigh 29.3°C · Low 24.2°C · 127 mm rain
- Maranguape in MayBrazil · 25 kmHigh 29.6°C · Low 23.9°C · 100 mm rain
- Pacatuba in MayBrazil · 31 kmHigh 29.6°C · Low 23.6°C · 127 mm rain
- Horizonte in MayBrazil · 43 kmHigh 29.5°C · Low 23.2°C · 127 mm rain
- Pacajus in MayBrazil · 51 kmHigh 29.9°C · Low 23.3°C · 111 mm rain
- Cascavel, Brazil in MayBrazil · 57 kmHigh 29.1°C · Low 24.7°C · 120 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 Fortaleza) is explained once on the Fortaleza year overview and on the Sources, method and limits page.