Santo André weather in December
December is one of the least pleasant months in Santo André: highs of 27°C (81°F) and about 184 mm (7.2 in) of rain on average. Nights average 18°C (64°F) and cloud cover 77% (NASA POWER, 2001–2025 averages). It is the 2nd wettest month of the year and the 2nd warmest. Compared with November, it is warmer and wetter; January brings highs of 27°C (80°F) and 228 mm (9.0 in) of rain.
Is December a good time to visit Santo André?
least pleasant month Weather score 54/100.
December is one of the least pleasant months for weather in Santo André. For better conditions, consider Apr–Sep.
Does it rain a lot in Santo André in December?
Yes, it is one of the rainy months: about 184 mm (7.2 in) falls in an average December. It is the 2nd wettest month of the year.
How warm is Santo André in December?
Days average 27°C (81°F) and nights 18°C (64°F).
Santo André weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 27°C (80°F) | 19°C (66°F) | 228 mm | 78% | least pleasant |
| February | 27°C (81°F) | 19°C (65°F) | 178 mm | 69% | least pleasant |
| March | 26°C (79°F) | 18°C (64°F) | 153 mm | 65% | fair |
| April | 25°C (77°F) | 16°C (61°F) | 91 mm | 57% | best |
| May | 22°C (72°F) | 13°C (56°F) | 68 mm | 57% | best |
| June | 22°C (72°F) | 12°C (54°F) | 55 mm | 53% | best |
| July | 22°C (72°F) | 11°C (52°F) | 62 mm | 48% | best |
| August | 24°C (75°F) | 12°C (53°F) | 37 mm | 47% | best |
| September | 26°C (78°F) | 13°C (56°F) | 68 mm | 59% | best |
| October | 27°C (80°F) | 15°C (59°F) | 106 mm | 71% | fair |
| November | 26°C (79°F) | 16°C (61°F) | 151 mm | 75% | fair |
| December | 27°C (81°F) | 18°C (64°F) | 184 mm | 77% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months