Ishøj climate by month
What the weather is like
Ishøj has an oceanic climate (Köppen Cfb): rain spread through the year and no real dry season.
The warmest month is July, when afternoons average 22° and nights 15°. January is the coolest month, with highs of 4° and lows of 0°. The difference between the warmest and the coolest month is about 16°.
About 662 mm of precipitation falls in an average year. August is the wettest month (75 mm, 16 wet days) and April the driest (34 mm, 9 wet days). Cloud cover ranges from 32% in July to 57% in December.
The sea reaches about 18° 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 Copenhagen, the capital, Ishøj is 0.4° cooler on a July afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 22° · July
- Coldest nights
- 0° · February
- Wettest month
- August
- Driest month
- April
- Clearest skies
- July · 32% cloud
- Warmest sea
- 18° · August
- Longest day
- 17 h 29 min
- Shortest day
- 7 h 05 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 | 4° | 4° | 6° | 11° | 16° | 19° | 22° | 22° | 18° | 13° | 8° | 5° |
| Average low | 0° | 0° | 1° | 5° | 9° | 12° | 15° | 15° | 12° | 8° | 5° | 2° |
| Precipitation | 52 mm | 36 mm | 43 mm | 34 mm | 49 mm | 67 mm | 63 mm | 75 mm | 62 mm | 66 mm | 58 mm | 57 mm |
| Wet days (≥1 mm) | 13.6 | 10.8 | 10.4 | 8.8 | 11.4 | 12.3 | 13.5 | 15.8 | 11.8 | 14.2 | 14.2 | 14.8 |
| Cloud cover | 56% | 53% | 47% | 39% | 34% | 35% | 32% | 35% | 39% | 44% | 52% | 57% |
| Sea temperature | 3° | 2° | 3° | 6° | 10° | 14° | 17° | 18° | 15° | 12° | 9° | 5° |
| Daylight | 7h 40 | 9h 38 | 11h 46 | 14h 08 | 16h 14 | 17h 29 | 16h 58 | 15h 06 | 12h 48 | 10h 32 | 8h 21 | 7h 05 |
| Month score | 15 | 23 | 26 | 40 | 60 | 69 | 67 | 65 | 66 | 32 | 16 | 14 |