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Tulcán, Ecuador climate
As Tropical savanna (dry summer)
Tulcán has a remarkably steady warm-temperate climate (Tropical savanna (dry summer), Köppen As). The hottest month is August with an average daily high near 26°C, while the coldest is January averaging around 15°C at night. Precipitation totals about 1188 mm a year and is strongly seasonal — November alone averages 178 mm while August barely receives 17 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsTulcán climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 25 | 24 | 23 |
| Avg temp (°C) | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 |
| Avg low (°C) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Precipitation (mm) | 116 | 80 | 148 | 152 | 127 | 56 | 27 | 17 | 57 | 126 | 178 | 104 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 24 | 24 | 24 | 25 | 25 |
| Avg temp (°C) | 19 | 19 | 20 | 20 | 20 | 20 |
| Avg low (°C) | 15 | 15 | 15 | 15 | 15 | 15 |
| Precipitation (mm) | 116 | 80 | 148 | 152 | 127 | 56 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 26 | 26 | 25 | 24 | 23 |
| Avg temp (°C) | 20 | 20 | 20 | 20 | 19 | 19 |
| Avg low (°C) | 15 | 15 | 15 | 15 | 15 | 15 |
| Precipitation (mm) | 27 | 17 | 57 | 126 | 178 | 104 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 8 | 11 | 12 | 11 | 7 | 5 | 3 | 5 | 11 | 13 | 11 |
| Days with low ≤ 0°C (days) | 0.2 | 0.2 | 0.2 | 0.4 | 0.1 | 0.0 | 0.1 | 0.2 | 0.0 | 0.3 | 0.2 | 0.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 8 | 11 | 12 | 11 | 7 |
| Days with low ≤ 0°C (days) | 0.2 | 0.2 | 0.2 | 0.4 | 0.1 | 0.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 5 | 3 | 5 | 11 | 13 | 11 |
| Days with low ≤ 0°C (days) | 0.1 | 0.2 | 0.0 | 0.3 | 0.2 | 0.5 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 82 | 85 | 84 | 83 | 76 | 73 | 72 | 77 | 82 | 84 | 78 |
| Clear days (≤ 30% cloud) | 0.1 | 0.0 | 0.0 | — | 0.0 | — | 0.2 | 0.1 | 0.0 | — | 0.1 | 0.2 |
| Partly cloudy days (30–70%) | 10 | 6 | 4 | 4 | 5 | 10 | 11 | 13 | 9 | 5 | 4 | 8 |
| Cloudy days (≥ 70%) | 21 | 22 | 27 | 26 | 26 | 20 | 19 | 18 | 21 | 26 | 25 | 22 |
| Relative humidity (%) | 85 | 84 | 84 | 84 | 82 | 79 | 77 | 75 | 76 | 81 | 85 | 85 |
| Wind speed (km/h) | 4.5 | 4.1 | 3.8 | 3.4 | 3.1 | 3.6 | 4.1 | 4.5 | 3.6 | 4.2 | 4.8 | 4.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 82 | 85 | 84 | 83 | 76 |
| Clear days (≤ 30% cloud) | 0.1 | 0.0 | 0.0 | — | 0.0 | — |
| Partly cloudy days (30–70%) | 10 | 6 | 4 | 4 | 5 | 10 |
| Cloudy days (≥ 70%) | 21 | 22 | 27 | 26 | 26 | 20 |
| Relative humidity (%) | 85 | 84 | 84 | 84 | 82 | 79 |
| Wind speed (km/h) | 4.5 | 4.1 | 3.8 | 3.4 | 3.1 | 3.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 77 | 82 | 84 | 78 |
| Clear days (≤ 30% cloud) | 0.2 | 0.1 | 0.0 | — | 0.1 | 0.2 |
| Partly cloudy days (30–70%) | 11 | 13 | 9 | 5 | 4 | 8 |
| Cloudy days (≥ 70%) | 19 | 18 | 21 | 26 | 25 | 22 |
| Relative humidity (%) | 77 | 75 | 76 | 81 | 85 | 85 |
| Wind speed (km/h) | 4.1 | 4.5 | 3.6 | 4.2 | 4.8 | 4.5 |
Methodology & sources
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 16 years of daily observations at Pasto/antonio Narin, a weather station, about 84 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.