Climate averages 1991–2020
Tulcán weather
by month.
See how the year changes. October has the highest average daily maximum; August has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Tulcán averages a daytime high of 16.2°C and a nighttime low of 9.3°C, with about 2,434 mm of rain on roughly 324 days. October is the warmest month (average high 16.8°C) and July the coolest (15.0°C). November is the wettest month with 290 mm; August is the driest with 94 mm.
The annual picture
A year in Tulcán
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 | 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
Nearby cities
- IpialesColombia · 9 kmHigh 15.7°C · Low 9.0°C · 2,434 mm rain a year
- PastoColombia · 66 kmHigh 17.9°C · Low 10.8°C · 2,035 mm rain a year
- IbarraEcuador · 69 kmHigh 20.3°C · Low 11.2°C · 1,690 mm rain a year
- TumacoColombia · 162 kmHigh 26.7°C · Low 24.1°C · 3,623 mm rain a year
- Santo Domingo de los ColoradosEcuador · 201 kmHigh 24.2°C · Low 19.5°C · 2,680 mm rain a year
- EsmeraldasEcuador · 216 kmHigh 27.8°C · Low 23.3°C · 1,684 mm rain a year
- PitalitoColombia · 218 kmHigh 22.6°C · Low 14.6°C · 3,140 mm rain a year
- PopayánColombia · 218 kmHigh 22.3°C · Low 14.4°C · 2,508 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-5, 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 0.80°, -77.70° (2 km from the city centre). Rain comes from the 0.25° cell at 0.75°, -77.75°. 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. 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.