Sidney climate by month
What the weather is like
Sidney has a warm-summer Mediterranean climate (Köppen Csb): dry, sunny summers and mild, wetter winters.
The warmest month is July, when afternoons average 24° and nights 13°. December is the coolest month, with highs of 7° and lows of 1°. The difference between the warmest and the coolest month is about 14°.
About 1,049 mm of precipitation falls in an average year. January is the wettest month (164 mm, 20 wet days) and August the driest (29 mm, 5 wet days). Cloud cover ranges from 23% in July to 52% in January.
The sea reaches about 14° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Ottawa, the capital, Sidney is 2.5° cooler on a July afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 24° · July
- Coldest nights
- 1° · December
- Wettest month
- January
- Driest month
- August
- Clearest skies
- July · 23% cloud
- Warmest sea
- 14° · August
- Longest day
- 16 h 07 min
- Shortest day
- 8 h 18 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 | 8° | 9° | 12° | 15° | 19° | 22° | 24° | 24° | 21° | 15° | 10° | 7° |
| Average low | 2° | 2° | 3° | 5° | 8° | 11° | 13° | 13° | 10° | 7° | 4° | 1° |
| Precipitation | 164 mm | 107 mm | 90 mm | 60 mm | 46 mm | 37 mm | 20 mm | 29 mm | 43 mm | 106 mm | 179 mm | 168 mm |
| Wet days (≥1 mm) | 20.1 | 15.8 | 19.8 | 15 | 12 | 10.6 | 5.5 | 5.3 | 10.7 | 16.6 | 20.1 | 19.8 |
| Cloud cover | 52% | 47% | 47% | 43% | 38% | 34% | 23% | 23% | 26% | 41% | 51% | 52% |
| Sea temperature | 8° | 8° | 8° | 9° | 11° | 12° | 14° | 14° | 13° | 11° | 9° | 8° |
| Daylight | 8h 44 | 10h 13 | 11h 51 | 13h 41 | 15h 15 | 16h 07 | 15h 45 | 14h 22 | 12h 37 | 10h 51 | 9h 12 | 8h 18 |
| Month score | 16 | 18 | 27 | 46 | 68 | 73 | 87 | 88 | 75 | 48 | 17 | 16 |