Climate averages 1991–2020
Santos weather
in May.
A warm, wet month: the 8th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Santos: daytime highs average 24.4°C and nights cool to about 18.7°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 125 mm of rain on roughly 13 days, which makes May a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 58 min on an average May day.
The nearest other city in this atlas is São Vicente (6 km away). In May its highs average 24.8°C, about as warm as Santos, with 105 mm of rain.
Among the 448 cities listed in Brazil, Santos ranks joint 268th of 448 for the warmest May highs and joint 361st of 448 for the driest May (rainfall, lowest first). The mean May high of those 448 cities is 25.3°C; Santos is 0.9°C cooler than that mean.
From May to June, average highs fall by 0.6°C to 23.8°C, and monthly rainfall falls from 125 mm to 97 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
Santos climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.4°C23.3°C | 23.3°C | 225 | 20.7 | 13.413 h |
| February | 28.7°C23.5°C | 23.5°C | 202 | 17.4 | 12.913 h |
| March | 27.7°C22.8°C | 22.8°C | 206 | 19.4 | 12.212 h |
| April | 26.5°C21.2°C | 21.2°C | 127 | 13.2 | 11.512 h |
| May, selected | 24.4°C18.7°C | 18.7°C | 125 | 12.7 | 11.011 h |
| June | 23.8°C17.4°C | 17.4°C | 97 | 10.1 | 10.711 h |
| July | 23.2°C16.6°C | 16.6°C | 115 | 9.9 | 10.811 h |
| August | 23.4°C16.8°C | 16.8°C | 94 | 10.2 | 11.311 h |
| September | 24.0°C18.0°C | 18.0°C | 142 | 14.1 | 11.912 h |
| October | 25.0°C19.4°C | 19.4°C | 158 | 16.1 | 12.613 h |
| November | 25.6°C20.4°C | 20.4°C | 174 | 16.7 | 13.313 h |
| December | 27.4°C22.2°C | 22.2°C | 179 | 18.0 | 13.614 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
- São Vicente in MayBrazil · 6 kmHigh 24.8°C · Low 18.6°C · 105 mm rain
- Praia Grande in MayBrazil · 9 kmHigh 24.6°C · Low 18.4°C · 105 mm rain
- Ribeirão Pires in MayBrazil · 29 kmHigh 21.9°C · Low 14.6°C · 96 mm rain
- São Bernardo do Campo in MayBrazil · 38 kmHigh 21.5°C · Low 14.1°C · 96 mm rain
- Santo André in MayBrazil · 39 kmHigh 21.6°C · Low 14.3°C · 96 mm rain
- São Caetano do Sul in MayBrazil · 44 kmHigh 21.9°C · Low 14.2°C · 64 mm rain
- Ferraz de Vasconcelos in MayBrazil · 47 kmHigh 22.1°C · Low 14.2°C · 65 mm rain
- Mogi das Cruzes in MayBrazil · 51 kmHigh 21.9°C · Low 13.9°C · 65 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 Santos) is explained once on the Santos year overview and on the Sources, method and limits page.