Climate averages 1991–2020
Punta Arenas weather
in September.
A cold, moderately wet month: the 8th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a cold month in Punta Arenas: daytime highs average 6.7°C and nights cool to about 1.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 54 mm of rain on roughly 12 days, which makes September a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 38 min on an average September day.
The nearest other city in this atlas is Río Gallegos (205 km away). In September its highs average 10.0°C, 3.3°C warmer than Punta Arenas, with 21 mm of rain.
Among the 40 cities listed in Chile, Punta Arenas ranks 40th of 40 for the warmest September highs and 16th of 40 for the driest September (rainfall, lowest first). The mean September high of those 40 cities is 17.2°C; Punta Arenas is 10.5°C cooler than that mean.
From September to October, average highs rise by 1.9°C to 8.6°C, and monthly rainfall rises from 54 mm to 69 mm.
The annual picture
September 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
Punta Arenas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.3°C7.1°C | 7.1°C | 89 | 20.0 | 16.316 h |
| February | 12.4°C7.0°C | 7.0°C | 69 | 15.6 | 14.615 h |
| March | 11.1°C6.2°C | 6.2°C | 83 | 17.4 | 12.613 h |
| April | 8.8°C4.5°C | 4.5°C | 84 | 15.4 | 10.510 h |
| May | 6.1°C2.5°C | 2.5°C | 60 | 13.2 | 8.69 h |
| June | 3.8°C0.6°C | 0.6°C | 56 | 12.4 | 7.68 h |
| July | 3.6°C0.1°C | 0.1°C | 56 | 12.8 | 8.18 h |
| August | 4.7°C0.7°C | 0.7°C | 62 | 13.4 | 9.610 h |
| September, selected | 6.7°C1.8°C | 1.8°C | 54 | 12.2 | 11.612 h |
| October | 8.6°C3.2°C | 3.2°C | 69 | 15.5 | 13.714 h |
| November | 10.2°C4.7°C | 4.7°C | 78 | 18.3 | 15.716 h |
| December | 11.4°C6.1°C | 6.1°C | 88 | 20.7 | 16.817 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
September in nearby cities
- Río Gallegos in SeptemberArgentina · 205 kmHigh 10.0°C · Low 1.4°C · 21 mm rain
- Puerto Montt in SeptemberChile · 1309 kmHigh 12.0°C · Low 5.5°C · 185 mm rain
- Osorno in SeptemberChile · 1410 kmHigh 12.9°C · Low 4.5°C · 129 mm rain
- Valdivia in SeptemberChile · 1495 kmHigh 13.2°C · Low 6.0°C · 153 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 Punta Arenas) is explained once on the Punta Arenas year overview and on the Sources, method and limits page.