Climate averages 1991–2020
Trelew weather
in January.
A hot, fairly dry month: the warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Trelew: daytime highs average 29.1°C and nights cool to about 16.2°C. By daytime temperature it is the warmest month of the year.
Expect about 15 mm of rain on roughly 3 days, which makes January a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 59 min on an average January day.
The nearest other city in this atlas is Comodoro Rivadavia (338 km away). In January its highs average 23.2°C, 5.9°C cooler than Trelew, with 9.6 mm of rain.
Among the 67 cities listed in Argentina, Trelew ranks joint 37th of 67 for the warmest January highs and 4th of 67 for the driest January (rainfall, lowest first). The mean January high of those 67 cities is 29.0°C; Trelew is 0.1°C warmer than that mean.
From January to February, average highs fall by 1.6°C to 27.5°C, and monthly rainfall rises from 15 mm to 22 mm.
The annual picture
January 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
Trelew climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 29.1°C16.2°C | 16.2°C | 15 | 3.0 | 15.015 h |
| February | 27.5°C15.2°C | 15.2°C | 22 | 3.7 | 13.814 h |
| March | 25.1°C13.5°C | 13.5°C | 21 | 3.5 | 12.412 h |
| April | 20.4°C9.8°C | 9.8°C | 19 | 2.9 | 10.911 h |
| May | 15.8°C6.5°C | 6.5°C | 23 | 4.0 | 9.710 h |
| June | 12.1°C3.4°C | 3.4°C | 23 | 4.1 | 9.09 h |
| July | 11.8°C2.5°C | 2.5°C | 14 | 3.5 | 9.39 h |
| August | 14.5°C4.3°C | 4.3°C | 14 | 3.4 | 10.410 h |
| September | 17.3°C6.1°C | 6.1°C | 18 | 4.0 | 11.812 h |
| October | 21.3°C9.2°C | 9.2°C | 18 | 4.1 | 13.213 h |
| November | 24.7°C12.2°C | 12.2°C | 16 | 3.2 | 14.615 h |
| December | 27.3°C14.5°C | 14.5°C | 18 | 3.0 | 15.315 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
January in nearby cities
- Comodoro Rivadavia in JanuaryArgentina · 338 kmHigh 23.2°C · Low 14.4°C · 9.6 mm rain
- General Roca in JanuaryArgentina · 506 kmHigh 31.8°C · Low 18.6°C · 18 mm rain
- Cipolletti in JanuaryArgentina · 530 kmHigh 31.8°C · Low 18.4°C · 12 mm rain
- Neuquén in JanuaryArgentina · 531 kmHigh 31.6°C · Low 18.3°C · 12 mm rain
- San Carlos de Bariloche in JanuaryArgentina · 547 kmHigh 19.9°C · Low 9.2°C · 31 mm rain
- Bahía Blanca in JanuaryArgentina · 565 kmHigh 29.7°C · Low 18.7°C · 54 mm rain
- Puerto Montt in JanuaryChile · 658 kmHigh 18.6°C · Low 11.7°C · 101 mm rain
- Osorno in JanuaryChile · 712 kmHigh 21.5°C · Low 11.0°C · 39 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 Trelew) is explained once on the Trelew year overview and on the Sources, method and limits page.