Rawson climate by month
What the weather is like
Rawson has a cold semi-arid climate (Köppen BSk): little rain, large day–night swings and strong sunshine.
The warmest month is January, when afternoons average 26° and nights 17°. July is the coolest month, with highs of 11° and lows of 4°. The difference between the warmest and the coolest month is about 14°.
About 236 mm of precipitation falls in an average year. July is the wettest month (20 mm, 5 wet days) and October the driest (20 mm, 2 wet days). Cloud cover ranges from 18% in January to 36% in June.
The sea reaches about 17° in February. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Buenos Aires, the capital, Rawson is 0.4° cooler on a January afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 26° · January
- Coldest nights
- 4° · July
- Wettest month
- July
- Driest month
- October
- Clearest skies
- January · 18% cloud
- Warmest sea
- 17° · February
- Longest day
- 15 h 22 min
- Shortest day
- 8 h 59 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 26° | 25° | 23° | 19° | 15° | 12° | 11° | 13° | 16° | 19° | 22° | 25° |
| Average low | 17° | 16° | 14° | 11° | 8° | 5° | 4° | 5° | 7° | 10° | 12° | 15° |
| Precipitation | 13 mm | 22 mm | 25 mm | 23 mm | 32 mm | 25 mm | 20 mm | 14 mm | 16 mm | 20 mm | 13 mm | 13 mm |
| Wet days (≥1 mm) | 3.3 | 2.7 | 2.3 | 3.3 | 2.5 | 4 | 4.5 | 3.3 | 4 | 1.8 | 4.3 | 3 |
| Cloud cover | 18% | 18% | 23% | 26% | 34% | 36% | 35% | 32% | 31% | 28% | 23% | 20% |
| Sea temperature | 17° | 17° | 17° | 15° | 13° | 12° | 10° | 9° | 9° | 11° | 13° | 15° |
| Daylight | 15h 01 | 13h 47 | 12h 25 | 10h 55 | 9h 40 | 8h 59 | 9h 16 | 10h 21 | 11h 46 | 13h 14 | 14h 37 | 15h 22 |
| Month score | 87 | 93 | 95 | 92 | 77 | 55 | 52 | 67 | 78 | 96 | 90 | 93 |