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Halifax climate by month
What the weather is like
Halifax has a warm-summer humid continental climate (Köppen Dfb): warm summers, cold winters and precipitation in every season.
The warmest month is August, when afternoons average 22° and nights 15°. January is the coolest month, with highs of 0° and lows of -8°. The difference between the warmest and the coolest month is about 23°, a large swing typical of continental interiors.
About 1,505 mm of precipitation falls in an average year. July is the wettest month (106 mm, 16 wet days) and January the driest (135 mm, 11 wet days). Cloud cover ranges from 39% in September to 52% in December.
The sea reaches about 17° 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, Halifax is 3.5° cooler on a August afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 22° · August
- Coldest nights
- -8° · January
- Wettest month
- July
- Driest month
- January
- Clearest skies
- September · 39% cloud
- Warmest sea
- 17° · August
- Longest day
- 15 h 33 min
- Shortest day
- 8 h 50 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 | 0° | 0° | 3° | 8° | 14° | 18° | 22° | 22° | 19° | 13° | 8° | 3° |
| Average low | -8° | -8° | -4° | 1° | 6° | 10° | 15° | 15° | 12° | 7° | 2° | -4° |
| Precipitation | 135 mm | 116 mm | 130 mm | 116 mm | 127 mm | 112 mm | 106 mm | 106 mm | 108 mm | 138 mm | 160 mm | 151 mm |
| Wet days (≥1 mm) | 10.5 | 10.7 | 11.8 | 11.7 | 12 | 15 | 15.8 | 13 | 12.5 | 13.2 | 11.5 | 13.3 |
| Cloud cover | 50% | 49% | 47% | 50% | 49% | 47% | 44% | 41% | 39% | 41% | 49% | 52% |
| Sea temperature | 3° | 1° | 1° | 2° | 5° | 10° | 14° | 17° | 16° | 13° | 9° | 6° |
| Daylight | 9h 11 | 10h 27 | 11h 53 | 13h 28 | 14h 48 | 15h 33 | 15h 14 | 14h 04 | 12h 33 | 11h 01 | 9h 36 | 8h 50 |
| Month score | 25 | 25 | 23 | 22 | 40 | 60 | 61 | 65 | 67 | 40 | 23 | 17 |