Climate averages 1991–2020
Tulcán weather
in May.
A mild, very wet month: the 9th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Tulcán: daytime highs average 16.2°C and nights cool to about 9.8°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 200 mm of rain on roughly 30 days, which makes May a very wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 09 min on an average May day.
The nearest other city in this atlas is Ipiales (9 km away). In May its highs average 15.7°C, about as warm as Tulcán, with 200 mm of rain.
Among the 9 cities listed in Ecuador, Tulcán ranks 9th of 9 for the warmest May highs and 7th of 9 for the driest May (rainfall, lowest first). The mean May high of those 9 cities is 23.3°C; Tulcán is 7.2°C cooler than that mean.
From May to June, average highs fall by 0.7°C to 15.4°C, and monthly rainfall falls from 200 mm to 160 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
Tulcán climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 16.3°C9.6°C | 9.6°C | 220 | 27.5 | 12.112 h |
| February | 16.6°C9.7°C | 9.7°C | 207 | 25.1 | 12.112 h |
| March | 16.6°C9.8°C | 9.8°C | 251 | 29.4 | 12.112 h |
| April | 16.5°C9.9°C | 9.9°C | 258 | 29.2 | 12.112 h |
| May, selected | 16.2°C9.8°C | 9.8°C | 200 | 29.8 | 12.212 h |
| June | 15.4°C9.0°C | 9.0°C | 160 | 27.4 | 12.212 h |
| July | 15.0°C8.4°C | 8.4°C | 147 | 27.0 | 12.212 h |
| August | 15.6°C8.2°C | 8.2°C | 94 | 22.7 | 12.112 h |
| September | 16.5°C8.7°C | 8.7°C | 109 | 21.9 | 12.112 h |
| October | 16.8°C9.4°C | 9.4°C | 230 | 27.4 | 12.112 h |
| November | 16.7°C9.9°C | 9.9°C | 290 | 28.0 | 12.112 h |
| December | 16.4°C9.8°C | 9.8°C | 269 | 29.1 | 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 · 9 kmHigh 15.7°C · Low 9.4°C · 200 mm rain
- Pasto in MayColombia · 66 kmHigh 17.8°C · Low 11.3°C · 181 mm rain
- Ibarra in MayEcuador · 69 kmHigh 20.1°C · Low 11.5°C · 160 mm rain
- Tumaco in MayColombia · 162 kmHigh 27.3°C · Low 24.4°C · 404 mm rain
- Santo Domingo de los Colorados in MayEcuador · 201 kmHigh 24.7°C · Low 20.0°C · 252 mm rain
- Esmeraldas in MayEcuador · 216 kmHigh 28.1°C · Low 23.9°C · 149 mm rain
- Pitalito in MayColombia · 218 kmHigh 22.1°C · Low 15.1°C · 307 mm rain
- Popayán in MayColombia · 218 kmHigh 22.3°C · Low 14.7°C · 197 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 Tulcán) is explained once on the Tulcán year overview and on the Sources, method and limits page.
Ipiales lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.