Santos climate
Santos (São Paulo, Brazil) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 24 °C75 °F, and about 1,370 mm54 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Santos climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2984 | 2576 | 2780 | 2128.4 |
| Feb | 2984 | 2577 | 2780 | 1756.9 |
| Mar | 2883 | 2476 | 2679 | 1526.0 |
| Apr | 2780 | 2373 | 2577 | 983.9 |
| May | 2577 | 2069 | 2373 | 712.8 |
| Jun | 2475 | 1966 | 2171 | 582.3 |
| Jul | 2374 | 1865 | 2169 | 682.7 |
| Aug | 2475 | 1865 | 2170 | 421.7 |
| Sep | 2576 | 1966 | 2271 | 763.0 |
| Oct | 2678 | 2069 | 2374 | 1064.2 |
| Nov | 2679 | 2271 | 2475 | 1385.4 |
| Dec | 2882 | 2374 | 2578 | 1746.8 |
| Year | 2984 | 1865 | 2475 | 1,37054 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 78% | 5.2 | 13:28 |
| Feb | 81% | 69% | 5.4 | 12:56 |
| Mar | 83% | 65% | 4.9 | 12:17 |
| Apr | 81% | 57% | 4.4 | 11:34 |
| May | 80% | 57% | 3.5 | 10:58 |
| Jun | 81% | 53% | 3.3 | 10:40 |
| Jul | 79% | 48% | 3.5 | 10:47 |
| Aug | 79% | 47% | 4.2 | 11:17 |
| Sep | 80% | 59% | 4.4 | 11:59 |
| Oct | 82% | 71% | 4.9 | 12:42 |
| Nov | 82% | 75% | 5.2 | 13:19 |
| Dec | 82% | 77% | 5.5 | 13:36 |
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 Santos is like
The warmest month is February, with an average high of 29 °C84 °F and a low of 25 °C77 °F. The coldest is July, when highs average 23 °C74 °F and lows 18 °C65 °F. Seasonal differences are small — just 6.2 °C11.1 °F between the warmest and the coolest month.
It is wet, with about 1,370 mm54 in of precipitation per year. The wettest three-month stretch is December–February, which brings 41% of the annual total. The wettest month is January (212 mm8.4 in), the driest is August (42 mm1.7 in).
Relative humidity ranges from 79% in August to 83% in March. The clearest skies (lowest average cloud amount, 47%) are typical of August. Average wind speed near the ground ranges from 11 km/h (7 mph) in February to 13 km/h (8 mph) in November. Daylight lasts from about 10.7 hours in June to 13.6 hours in December.
Best time to visit Santos
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–September: average highs of 23 °C74 °F to 25 °C77 °F with 42 mm1.7 in to 76 mm3.0 in of precipitation per month.
The most challenging month is January, which is very wet (212 mm8.4 in) and humid (82% 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 Santos
- Summer (December–February) — highs 2882 to 29 °C84 °F, lows 2374 to 25 °C77 °F, about 187 mm7.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Autumn (March–May) — highs 2577 to 28 °C83 °F, lows 2069 to 24 °C76 °F, about 107 mm4.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Winter (June–August) — highs 2374 to 24 °C75 °F, lows 1865 to 19 °C66 °F, about 56 mm2.2 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Spring (September–November) — highs 2576 to 26 °C79 °F, lows 1966 to 22 °C71 °F, about 107 mm4.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Santos compares
Compared with São Paulo, about 55 km to the northwest, Santos is on average 4 °C7.1 °F warmer and receives a similar amount of precipitation. The difference is largest in May (5.3 °C9.6 °F warmer).
Of the 223 places in Brazil covered by World Climates, Santos is the 110th warmest by annual mean temperature and the 86th 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 (seasons shifted for the other hemisphere where needed): West Palm Beach (United States, Am), Nukualofa (Tonga, Af) and Nouméa (New Caledonia, As).
The same NASA POWER grid cell also contains São Vicente (pop. 338,326), Guarujá (pop. 294,871) and Cubatão (pop. 114,870). Their long-term averages in this dataset are essentially the same as for Santos, so they do not have separate pages.
Nearby places
- Praia Grande 9 km · 24 °C75 °F · 1,370 mm54 in
- Itanhaém 52 km · 24 °C75 °F · 1,424 mm56 in
- São Paulo 55 km · 20 °C68 °F · 1,352 mm53 in
- Guarulhos 59 km · 20 °C67 °F · 1,380 mm54 in
- Jacareí 82 km · 21 °C70 °F · 1,380 mm54 in
- Atibaia 96 km · 20 °C68 °F · 1,366 mm54 in
- São José dos Campos 98 km · 21 °C70 °F · 1,353 mm53 in
- Caraguatatuba 101 km · 25 °C76 °F · 1,410 mm56 in
Frequently asked questions
What is the warmest month in Santos?
February is the warmest month in Santos, with an average high of 29 °C (84 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Santos?
July is the coldest month, with an average high of 23 °C (74 °F) and an average low of 18 °C (65 °F).
When does it rain the most in Santos?
January is the wettest month with about 212 mm (8.4 in) of precipitation; August is the driest with about 42 mm (1.7 in).
What is the best time to visit Santos?
Judging by long-term averages, the most comfortable months are May–September.
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.
The grid cell’s average elevation is 188 m, while Santos lies at about 12 m. Temperatures on this page were therefore adjusted by +1.1 °C2.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.