Climate averages 1991–2020
Arraiján weather
in May.
A hot, very wet month: the 4th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Arraiján: daytime highs average 28.3°C and nights cool to about 23.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 234 mm of rain on roughly 29 days, which makes May a very wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 32 min on an average May day.
The nearest other city in this atlas is Panama City (15 km away). In May its highs average 29.1°C, 0.8°C warmer than Arraiján, with 221 mm of rain.
Among the 6 cities listed in Panama, Arraiján ranks 6th of 6 for the warmest May highs and 4th of 6 for the driest May (rainfall, lowest first). The mean May high of those 6 cities is 29.0°C; Arraiján is 0.6°C cooler than that mean.
From May to June, average highs fall by 0.3°C to 28.1°C, and monthly rainfall rises from 234 mm to 255 mm.
The annual picture
May in context
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
Arraiján climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.2°C23.5°C | 23.5°C | 29 | 8.4 | 11.712 h |
| February | 28.9°C23.4°C | 23.4°C | 15 | 4.7 | 11.812 h |
| March | 29.4°C23.6°C | 23.6°C | 18 | 5.4 | 12.112 h |
| April | 29.2°C24.0°C | 24.0°C | 87 | 15.6 | 12.312 h |
| May, selected | 28.3°C23.9°C | 23.9°C | 234 | 28.9 | 12.513 h |
| June | 28.1°C23.6°C | 23.6°C | 255 | 29.2 | 12.613 h |
| July | 27.9°C23.5°C | 23.5°C | 280 | 30.2 | 12.613 h |
| August | 28.0°C23.5°C | 23.5°C | 276 | 30.6 | 12.412 h |
| September | 27.9°C23.3°C | 23.3°C | 269 | 29.6 | 12.212 h |
| October | 27.6°C23.2°C | 23.2°C | 268 | 30.0 | 11.912 h |
| November | 27.3°C23.2°C | 23.2°C | 252 | 27.6 | 11.712 h |
| December | 27.6°C23.5°C | 23.5°C | 124 | 20.5 | 11.612 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
May in nearby cities
- Panama City in MayPanama · 15 kmHigh 29.1°C · Low 24.6°C · 221 mm rain
- San Miguelito in MayPanama · 22 kmHigh 29.7°C · Low 24.3°C · 221 mm rain
- Juan Díaz in MayPanama · 25 kmHigh 29.1°C · Low 24.4°C · 221 mm rain
- Colón in MayPanama · 55 kmHigh 28.4°C · Low 24.7°C · 284 mm rain
- David in MayPanama · 312 kmHigh 29.1°C · Low 22.6°C · 450 mm rain
- Apartadó in MayColombia · 352 kmHigh 29.4°C · Low 24.2°C · 258 mm rain
- Chigorodó in MayColombia · 355 kmHigh 29.2°C · Low 23.1°C · 444 mm rain
- Montería in MayColombia · 414 kmHigh 30.3°C · Low 23.8°C · 286 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Arraiján) is explained once on the Arraiján year overview and on the Sources, method and limits page.