Climate averages 1991–2020
Pasto weather
in May.
A mild, very wet month: the 7th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Pasto: daytime highs average 17.8°C and nights cool to about 11.3°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 181 mm of rain on roughly 27 days, which makes May a very wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average May day.
The nearest other city in this atlas is Ipiales (59 km away). In May its highs average 15.7°C, 2.1°C cooler than Pasto, with 200 mm of rain.
Among the 46 cities listed in Colombia, Pasto ranks 45th of 46 for the warmest May highs and joint 15th of 46 for the driest May (rainfall, lowest first). The mean May high of those 46 cities is 25.9°C; Pasto is 8.1°C cooler than that mean.
From May to June, average highs fall by 0.3°C to 17.6°C, and monthly rainfall falls from 181 mm to 114 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
Pasto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.6°C10.9°C | 10.9°C | 177 | 22.4 | 12.112 h |
| February | 17.9°C11.0°C | 11.0°C | 184 | 22.6 | 12.112 h |
| March | 17.9°C11.1°C | 11.1°C | 235 | 27.5 | 12.112 h |
| April | 17.9°C11.3°C | 11.3°C | 231 | 27.5 | 12.112 h |
| May, selected | 17.8°C11.3°C | 11.3°C | 181 | 27.3 | 12.212 h |
| June | 17.6°C11.0°C | 11.0°C | 114 | 23.7 | 12.212 h |
| July | 17.6°C10.5°C | 10.5°C | 92 | 22.2 | 12.212 h |
| August | 18.5°C10.2°C | 10.2°C | 63 | 16.6 | 12.212 h |
| September | 18.9°C10.3°C | 10.3°C | 99 | 19.9 | 12.112 h |
| October | 18.1°C10.6°C | 10.6°C | 195 | 25.2 | 12.112 h |
| November | 17.3°C10.8°C | 10.8°C | 244 | 26.5 | 12.112 h |
| December | 17.4°C10.9°C | 10.9°C | 221 | 25.7 | 12.112 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
- Ipiales in MayColombia · 59 kmHigh 15.7°C · Low 9.4°C · 200 mm rain
- Tulcán in MayEcuador · 66 kmHigh 16.2°C · Low 9.8°C · 200 mm rain
- Ibarra in MayEcuador · 135 kmHigh 20.1°C · Low 11.5°C · 160 mm rain
- Pitalito in MayColombia · 154 kmHigh 22.1°C · Low 15.1°C · 307 mm rain
- Popayán in MayColombia · 155 kmHigh 22.3°C · Low 14.7°C · 197 mm rain
- Tumaco in MayColombia · 180 kmHigh 27.3°C · Low 24.4°C · 404 mm rain
- Florencia in MayColombia · 191 kmHigh 25.7°C · Low 18.6°C · 244 mm rain
- Cali in MayColombia · 260 kmHigh 26.0°C · Low 19.6°C · 210 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 Pasto) is explained once on the Pasto year overview and on the Sources, method and limits page.