Climate averages 1991–2020
Trelew weather
in May.
A mild, fairly dry month: the 9th warmest and one of the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Trelew: daytime highs average 15.8°C and nights cool to about 6.5°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 23 mm of rain on roughly 4 days, which makes May a fairly dry month (one of the wettest months of the year). Daylight, from sunrise to sunset, lasts about 9 h 41 min on an average May day.
The nearest other city in this atlas is Comodoro Rivadavia (338 km away). In May its highs average 12.8°C, 3.0°C cooler than Trelew, with 29 mm of rain.
Among the 67 cities listed in Argentina, Trelew ranks 59th of 67 for the warmest May highs and 5th of 67 for the driest May (rainfall, lowest first). The mean May high of those 67 cities is 18.0°C; Trelew is 2.2°C cooler than that mean.
From May to June, average highs fall by 3.6°C to 12.1°C, and monthly rainfall stays at 23 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
Trelew climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 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, selected | 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
May in nearby cities
- Comodoro Rivadavia in MayArgentina · 338 kmHigh 12.8°C · Low 7.3°C · 29 mm rain
- General Roca in MayArgentina · 506 kmHigh 16.3°C · Low 7.1°C · 27 mm rain
- Cipolletti in MayArgentina · 530 kmHigh 16.2°C · Low 6.8°C · 26 mm rain
- Neuquén in MayArgentina · 531 kmHigh 16.0°C · Low 6.7°C · 26 mm rain
- San Carlos de Bariloche in MayArgentina · 547 kmHigh 7.9°C · Low 2.8°C · 119 mm rain
- Bahía Blanca in MayArgentina · 565 kmHigh 16.7°C · Low 9.2°C · 38 mm rain
- Puerto Montt in MayChile · 658 kmHigh 12.5°C · Low 7.6°C · 261 mm rain
- Osorno in MayChile · 712 kmHigh 13.2°C · Low 6.1°C · 194 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.