Piauí weather in August
August is one of the best months to visit Piauí: highs of 35°C (96°F) and about 7 mm (0.3 in) of rain on average. Nights average 23°C (74°F) and cloud cover 24% (NASA POWER, 2001–2025 averages). It is the 2nd driest month of the year and the 4th warmest. Compared with July, it is warmer and drier; September brings highs of 37°C (99°F) and 7 mm (0.3 in) of rain.
Figures are long-term averages for Teresina, the largest city in Piauí. See below for other places.
Is August a good time to visit Piauí?
best month Weather score 76/100.
Yes. August is one of the best months for weather in Piauí.
Does it rain a lot in Piauí in August?
No, it is usually dry: about 7 mm (0.3 in) falls in an average August. It is the 2nd driest month of the year.
How warm is Piauí in August?
Days average 35°C (96°F) and nights 23°C (74°F).
Piauí weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 32°C (89°F) | 23°C (74°F) | 184 mm | 74% | least pleasant |
| February | 30°C (86°F) | 23°C (73°F) | 227 mm | 78% | least pleasant |
| March | 30°C (85°F) | 23°C (73°F) | 261 mm | 77% | least pleasant |
| April | 29°C (85°F) | 23°C (73°F) | 239 mm | 73% | least pleasant |
| May | 30°C (87°F) | 22°C (72°F) | 106 mm | 53% | fair |
| June | 32°C (89°F) | 22°C (72°F) | 24 mm | 37% | best |
| July | 33°C (92°F) | 22°C (72°F) | 11 mm | 29% | best |
| August | 35°C (96°F) | 23°C (74°F) | 7 mm | 24% | best |
| September | 37°C (99°F) | 24°C (76°F) | 7 mm | 30% | fair |
| October | 38°C (100°F) | 25°C (77°F) | 21 mm | 43% | fair |
| November | 37°C (98°F) | 25°C (77°F) | 39 mm | 53% | fair |
| December | 35°C (95°F) | 24°C (76°F) | 77 mm | 63% | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Piauí in August
Weather can differ a lot within Piauí: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Teresina | 35°C (96°F) | 23°C (74°F) | 7 mm | best |
| Parnaíba | 35°C (94°F) | 23°C (73°F) | 7 mm | best |
| Picos | 35°C (95°F) | 20°C (68°F) | 1 mm | best |
| Piripiri | 36°C (97°F) | 22°C (72°F) | 7 mm | best |
| Floriano | 36°C (96°F) | 22°C (72°F) | 2 mm | best |
| Barras | 34°C (94°F) | 23°C (73°F) | 8 mm | best |
| Altos | 35°C (96°F) | 23°C (74°F) | 7 mm | best |
| Campo Maior | 36°C (97°F) | 23°C (73°F) | 5 mm | best |
| União | 34°C (93°F) | 23°C (73°F) | 9 mm | best |
| Esperantina | 34°C (94°F) | 23°C (73°F) | 8 mm | best |
| José de Freitas | 35°C (96°F) | 23°C (74°F) | 7 mm | best |
| São Raimundo Nonato | 34°C (93°F) | 19°C (67°F) | 0 mm | best |