Climate averages 1991–2020
Parnamirim weather
by month.
See how the year changes. December has the highest average daily maximum; October (tied with November) has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: September
Long-term climate patterns, not a forecast for a particular trip.
Across the year Parnamirim averages a daytime high of 28.8°C and a nighttime low of 23.7°C, with about 772 mm of rain on roughly 168 days. December is the warmest month (average high 29.9°C) and July the coolest (26.9°C). April is the wettest month with 136 mm; October (tied with November) is the driest with 13 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): September. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Parnamirim
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Parnamirim climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.8°C24.4°C | 24.4°C | 55 | 15.4 | 12.412 h |
| February | 29.7°C24.5°C | 24.5°C | 73 | 16.4 | 12.312 h |
| March | 29.5°C24.5°C | 24.5°C | 110 | 20.9 | 12.112 h |
| April | 28.9°C24.3°C | 24.3°C | 136 | 22.0 | 12.012 h |
| May | 28.5°C24.0°C | 24.0°C | 104 | 19.3 | 11.812 h |
| June | 27.5°C23.2°C | 23.2°C | 106 | 18.6 | 11.812 h |
| July | 26.9°C22.5°C | 22.5°C | 87 | 17.3 | 11.812 h |
| August | 27.5°C22.4°C | 22.4°C | 32 | 11.0 | 11.912 h |
| September | 28.5°C22.9°C | 22.9°C | 18 | 7.2 | 12.112 h |
| October | 29.3°C23.7°C | 23.7°C | 13 | 5.2 | 12.212 h |
| November | 29.7°C24.2°C | 24.2°C | 13 | 5.2 | 12.412 h |
| December | 29.9°C24.5°C | 24.5°C | 25 | 9.6 | 12.512 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- MacaíbaBrazil · 12 kmHigh 29.7°C · Low 23.7°C · 1,114 mm rain a year
- NatalBrazil · 15 kmHigh 28.5°C · Low 24.0°C · 1,114 mm rain a year
- Ceará-MirimBrazil · 36 kmHigh 29.3°C · Low 23.7°C · 627 mm rain a year
- Santa RitaBrazil · 137 kmHigh 29.0°C · Low 23.7°C · 878 mm rain a year
- João PessoaBrazil · 140 kmHigh 28.2°C · Low 23.7°C · 1,032 mm rain a year
- Campina GrandeBrazil · 161 kmHigh 28.6°C · Low 20.2°C · 402 mm rain a year
- GoianaBrazil · 185 kmHigh 28.9°C · Low 23.3°C · 801 mm rain a year
- CarpinaBrazil · 215 kmHigh 28.5°C · Low 21.7°C · 667 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -5.90°, -35.30° (5 km from the city centre). Rain comes from the 0.25° cell at -6.00°, -35.25°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.