Parnaíba in Spring
In spring (September, October and November), Parnaíba sees average daytime highs around 35°C and overnight lows near 25°C, with 14 mm of rain over about 3 wet days across the season. It is the warmest season of the year and the driest season of the year.
Across spring, daytime highs hold fairly steady around 35°C. The sky is clear or mostly clear about 68% of the time across spring, and the air most often feels oppressive.
Spring is Parnaíba's 2nd-best season to visit on our travel score. For the whole year in context, see Parnaíba's year-round climate.
- Avg daytime high
- 35°C
- warmest season of the year
- Avg overnight low
- 25°C
- Rainfall
- 14 mm
- 3 wet days
- Avg wind
- 21 km/h
- Travel score
- 3.5
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Parnaíba in Spring
Across spring, daytime highs hold fairly steady around 35°C.
A typical spring day in Parnaíba reaches about 35°C and drops to 25°C overnight. The warmest of the three months is September, the coolest September.
How spring really feels in Parnaíba
Once humidity and wind are folded in, spring brings about 91 days that feel above 32°C and 0 that feel at or below 0°C.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Parnaíba weather by month
How the three spring months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 25° | 129 | 20 | 12.1 | 3.1 |
| Feb | 31° / 25° | 170 | 23 | 12.1 | 2.9 |
| Mar | 30° / 25° | 265 | 27.7 | 12 | 2.8 |
| Apr | 30° / 25° | 268 | 25.9 | 11.9 | 2.9 |
| May | 31° / 25° | 148 | 18 | 11.9 | 3.6 |
| Jun | 32° / 25° | 31 | 7.1 | 11.8 | 4.4 |
| Jul | 33° / 24° | 16 | 2.7 | 11.8 | 4.3 |
| Aug | 34° / 24° | 3 | 0.5 | 11.9 | 3.8 |
| Sep | 35° / 25° | 1 | 0.2 | 12 | 3.5 |
| Oct | 35° / 25° | 6 | 0.7 | 12.1 | 3.4 |
| Nov | 34° / 25° | 7 | 1.7 | 12.1 | 3.5 |
| Dec | 33° / 25° | 35 | 7.2 | 12.2 | 3.5 |
Cloud cover in Spring
The sky is clear or mostly clear about 68% of the time across spring.
Chance of precipitation in Spring
Parnaíba gets around 14 mm of rain over 3 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 21 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 54 min in early September to 12 h 12 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 6.8 kWh/m².
Hazard calendar for Parnaíba
None of Parnaíba's seasonal hazards peak in spring. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Parnaíba's monsoon runs January–May, when most of the year's rain falls.
Is spring a good time to visit Parnaíba?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a weaker month for outdoor sightseeing in Parnaíba. The water and warmth also suit a beach or pool day.
What to pack for Parnaíba in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Parnaíba sees daytime highs around 35°C and nights near 25°C. Pack light clothes and sun protection. Worth having: a windbreaker.
Sea temperature near Parnaíba in Spring
The nearest coast averages about 27°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in May at about 29°C and coldest in September near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 28 | 29 | 29 | 29 | 29 | 28 | 27 | 27 | 27 | 28 | 28 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 29 | Tropical |
| Jun | 29 | Tropical |
| Jul | 28 | Warm |
| Aug | 27 | Warm |
| Sep | 27 | Warm |
| Oct | 27 | Warm |
| Nov | 28 | Warm |
| Dec | 28 | Tropical |
UV index in Parnaíba in Spring
Clear-sky midday UV across spring averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Parnaíba peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (extreme).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 14 | 15 | 14 | 12 | 10 | 10 | 10 | 12 | 12 | 11 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 11 | Extreme |
| Dec | 11 | Extreme |
Air quality in Parnaíba in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Parnaíba is worst in December — around 18 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (August, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 12 | 15 | 13 | 11 | 8 | 7 | 9 | 6 | 7 | 10 | 16 | 18 |
| Level | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Moderate |
| Feb | 15 | Moderate |
| Mar | 13 | Moderate |
| Apr | 11 | Good |
| May | 8 | Good |
| Jun | 7 | Good |
| Jul | 9 | Good |
| Aug | 6 | Good |
| Sep | 7 | Good |
| Oct | 10 | Good |
| Nov | 16 | Moderate |
| Dec | 18 | Moderate |
Where is Parnaíba?
Parnaíba sits at 2.9°S, 41.8°W, 9 m above sea level, in Brazil. The nearest listed city is Ilha Grande, 7.0 km away.
Topography around Parnaíba
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Parnaíba.
Within 3 km, the terrain around Parnaíba has only modest variations in elevation — a maximum elevation change of 28 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 52 m; within 80 km, large variations in elevation — a maximum elevation change of 919 m.
The land around Parnaíba is covered by grassland (46%) and artificial surfaces (31%) within 3 km, grassland (37%) and trees (29%) within 16 km, and trees (39%) and water (33%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Parnaíba (-2.9047°, -41.7767°, elevation 9 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.