Parnaíba weather by month & the best time to visit
🇧🇷 Brazil · beach resort · tropical — wet & dry seasons climate
The best time to visit Parnaíba is June — its sunniest month (Sunshine Score 86/100), with July close behind. Parnaíba averages about 2,984 hours of sunshine a year. Daytime highs around 31°C / 88°F and roughly 56 mm of rain in June.
Jump to: month-by-month table · sea temperature · nearby alternatives · embed this data
- Sun hours / year
- 2,984
- Sunniest month
- June
- Peak score
- 86/100
- Rain / year
- 1,103 mm
- Midday UV at peak
- 12 (extreme)
- Sea at warmest
- 31°C / 88°F
- Population
- 138k
- Elevation
- Sea level

When is the best time to visit Parnaíba?
For sunshine, the best time to visit Parnaíba is June, then July. The dullest month is August (67/100, 7 mm of rain). The full month-by-month picture is in the table below.
How sunny is Parnaíba?
Parnaíba gets a lot of sun: around 2,984 hours a year. June (86/100) is noticeably better than August (67). It ranks #12 of 131 destinations in Brazil for annual sunshine, above the national median of 2,486 hours. Rain is strongly seasonal here: roughly 61% of the year's 1,103 mm falls in the three months around March.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 70 | 31° / 88°F | 24° / 75°F | 146 mm | 11 | 30° / 86°F |
| February | 69 | 30° / 86°F | 24° / 75°F | 198 mm | 11 | 30° / 86°F |
| March | 69 | 29° / 84°F | 24° / 75°F | 240 mm | 11 | 30° / 86°F |
| April | 69 | 29° / 84°F | 24° / 75°F | 240 mm | 10 | 31° / 88°F |
| May | 72 | 30° / 86°F | 24° / 75°F | 134 mm | 10 | 30° / 86°F |
| June | 86 | 31° / 88°F | 23° / 73°F | 56 mm | 10 | 30° / 86°F |
| July | 81 | 33° / 91°F | 23° / 73°F | 37 mm | 10 | 29° / 84°F |
| August | 67 | 35° / 95°F | 23° / 73°F | 7 mm | 11 | 28° / 82°F |
| September | 67 | 35° / 95°F | 23° / 73°F | 4 mm | 12 | 28° / 82°F |
| October | 67 | 35° / 95°F | 24° / 75°F | 5 mm | 12 | 28° / 82°F |
| November | 67 | 35° / 95°F | 24° / 75°F | 7 mm | 12 | 28° / 82°F |
| December | 73 | 34° / 93°F | 24° / 75°F | 29 mm | 11 | 29° / 84°F |
Sea temperature in Parnaíba by month
The sea off Parnaíba is warmest in April at around 31°C / 88°F, and coolest in August at 28°C / 82°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Parnaíba on the interactive sunshine globe →
Nearby places for sunshine
- Cruz Brazil · 153 km · best in Jul · 2,890 h sun/yr
- Teresina Brazil · 270 km · best in Jul · 2,986 h sun/yr
- São Luís Brazil · 280 km · best in Oct · 2,413 h sun/yr
- Fortaleza Brazil · 368 km · best in Jul · 2,889 h sun/yr
- Juazeiro do Norte Brazil · 553 km · best in Jul · 2,989 h sun/yr
- Petrolina Brazil · 731 km · best in Aug · 3,026 h sun/yr
Nearest destinations
- Barreirinhas Brazil · 120 km · 2,779 h sun/yr · best in Jul
- Sobral Brazil · 185 km · 2,726 h sun/yr · best in Jul
Put the Parnaíba sunshine badge on your site
A compact badge showing Parnaíba's sunshine at a glance — free to embed under CC BY 4.0. Paste this wherever you'd like it to appear:
Live preview — this is exactly what your readers see: