Oeiras, Brazil Climate by Month
Oeiras, Piauí, Brazil
Hot all year, with a rainy season from January to April.
Oeiras is hot all year, with a rainy season from January to April. Expect highs of 97°F (36°C) in October and 89°F (32°C) in March, with the coldest nights (July) near 66°F (19°C). It gets 31 in (797 mm) of rain a year, 72% of it from January to April. June to September are almost completely dry.
- Warmest month
- 97°F(36°C)
- Average high, October
- Coldest nights
- 66°F(19°C)
- Average low, July
- Rain per year
- 31 in(797 mm)
- Wettest: February
- Humidity
- 61%
- Sunniest: September
Best and worst months in Oeiras
Best for weatherThe most comfortable weather comes from May to July, with highs around 90°F (32°C) and almost no rain.
Least pleasantJanuary and February are the least pleasant; January is the hottest, with highs of 92°F (33°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Oeiras weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 92°F(33°C) | 72°F(22°C) | 6.0 in(152 mm) | 67% | 4.8 |
| FebFebruary | 90°F(32°C) | 71°F(22°C) | 6.5 in(165 mm) | 70% | 4.7 |
| MarMarch | 89°F(32°C) | 71°F(22°C) | 6.3 in(160 mm) | 74% | 4.5 |
| AprApril | 89°F(32°C) | 71°F(21°C) | 3.7 in(93 mm) | 72% | 4.7 |
| MayMayBest | 90°F(32°C) | 70°F(21°C) | 1.0 in(26 mm) | 68% | 4.3 |
| JunJuneBest | 90°F(32°C) | 68°F(20°C) | 0.2 in(6 mm) | 59% | 4.6 |
| JulJulyBest | 91°F(33°C) | 66°F(19°C) | 0.1 in(3 mm) | 54% | 5.0 |
| AugAugust | 94°F(34°C) | 67°F(20°C) | 0.0 in(1 mm) | 51% | 5.6 |
| SepSeptember | 96°F(36°C) | 69°F(21°C) | 0.1 in(3 mm) | 47% | 5.8 |
| OctOctober | 97°F(36°C) | 72°F(22°C) | 1.2 in(31 mm) | 49% | 5.7 |
| NovNovember | 96°F(36°C) | 73°F(23°C) | 2.6 in(67 mm) | 57% | 5.2 |
| DecDecember | 94°F(35°C) | 73°F(23°C) | 3.5 in(90 mm) | 59% | 5.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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