Best time to visit Ilulissat
Month-by-month weather averages for Ilulissat.
Ilulissat, Avannaata, Greenland
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | -12.8 °C / 9 °F | -18.9 °C / -2 °F | 13 mm / 0.5 in | neither best nor good |
| February | -12.9 °C / 9 °F | -19.4 °C / -3 °F | 7 mm / 0.3 in | neither best nor good |
| March | -10.5 °C / 13 °F | -17.7 °C / 0 °F | 10 mm / 0.4 in | neither best nor good |
| April | -3.6 °C / 26 °F | -10.8 °C / 13 °F | 18 mm / 0.7 in | neither best nor good |
| May | 3.9 °C / 39 °F | -2.9 °C / 27 °F | 24 mm / 0.9 in | neither best nor good |
| June | 11.2 °C / 52 °F | 4.1 °C / 39 °F | 28 mm / 1.1 in | good month |
| July | 14.1 °C / 57 °F | 6.5 °C / 44 °F | 35 mm / 1.4 in | good month |
| August | 11.4 °C / 53 °F | 4.6 °C / 40 °F | 51 mm / 2 in | neither best nor good |
| September | 5.4 °C / 42 °F | -0.3 °C / 31 °F | 40 mm / 1.6 in | neither best nor good |
| October | -1.9 °C / 29 °F | -7.6 °C / 18 °F | 38 mm / 1.5 in | neither best nor good |
| November | -8 °C / 18 °F | -14.3 °C / 6 °F | 26 mm / 1 in | neither best nor good |
| December | -10.6 °C / 13 °F | -16.8 °C / 2 °F | 20 mm / 0.8 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: good
- JJuly: good
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Good
- June–July
Why these months
June · good
In its favour: precipitation 28 mm / 1.1 in, share of daylight that is sunny 68%, wet days 6 days, days with heavy rain 0.4 days, relative humidity 66%, average daily low 4.1 °C / 39 °F.
Against: feels like (high) 8.1 °C / 47 °F, average daily high 11.2 °C / 52 °F.
July · good
In its favour: precipitation 35 mm / 1.4 in, share of daylight that is sunny 67%, days with heavy rain 0.9 days, wet days 6.3 days, average daily high 14.1 °C / 57 °F, relative humidity 64%, average daily low 6.5 °C / 44 °F.
Against: feels like (high) 11.4 °C / 53 °F.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: good
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- June–August
- Good
- September
Why these months
June · best
In its favour: average daily high 11.2 °C / 52 °F, precipitation 28 mm / 1.1 in, wet days 6 days, days with heavy rain 0.4 days, average daily low 4.1 °C / 39 °F, share of daylight that is sunny 68%, daylight per day 24 h, feels like (high) 8.1 °C / 47 °F, wind (daily max) 15 km/h / 9 mph.
July · best
In its favour: average daily high 14.1 °C / 57 °F, precipitation 35 mm / 1.4 in, wet days 6.3 days, days with heavy rain 0.9 days, feels like (high) 11.4 °C / 53 °F, average daily low 6.5 °C / 44 °F, share of daylight that is sunny 67%, daylight per day 23.4 h, wind (daily max) 14 km/h / 9 mph.
August · best
In its favour: average daily high 11.4 °C / 53 °F, precipitation 51 mm / 2 in, days with heavy rain 1.2 days, wet days 9.1 days, average daily low 4.6 °C / 40 °F, share of daylight that is sunny 65%, daylight per day 17.8 h, feels like (high) 8.5 °C / 47 °F, wind (daily max) 13 km/h / 8 mph.
September · good
In its favour: precipitation 40 mm / 1.6 in, days with heavy rain 0.8 days, wet days 7.8 days, share of daylight that is sunny 65%, daylight per day 13.3 h, wind (daily max) 13 km/h / 8 mph, average daily low -0.3 °C / 31 °F.
Against: average daily high 5.4 °C / 42 °F, feels like (high) 1.8 °C / 35 °F.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Sisorarfiit Skiliften, 560 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | -17.9 °C | -18 °C | -15.3 °C | -8 °C | 0.2 °C | 8.1 °C | 11.4 °C | 8.5 °C | 1.8 °C | -6.1 °C | -12.8 °C | -15.8 °C |
| Days with heavy rain | 0.1 days | 0.1 days | 0.1 days | 0.2 days | 0.5 days | 0.4 days | 0.9 days | 1.2 days | 0.8 days | 0.8 days | 0.2 days | 0.3 days |
| Time rain usually falls | 6 pm | 8 pm | 3 am | 10 pm | 2 am | 10 am | 9 am | 10 pm | 6 am | 1 am | 4 am | 8 pm |
| Sunshine per day | 0.5 h | 4.2 h | 8.4 h | 11.5 h | 15.4 h | 16.3 h | 15.6 h | 11.6 h | 8.6 h | 5.3 h | 1.3 h | 0 h |
| Relative humidity | 61% | 63% | 68% | 71% | 71% | 66% | 64% | 69% | 71% | 66% | 64% | 62% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 0.2 µg/m³ | 0.5 µg/m³ | 2 µg/m³ | 3.9 µg/m³ | 4.6 µg/m³ | 4.9 µg/m³ | 4.3 µg/m³ | 4.1 µg/m³ | 3.1 µg/m³ | 1.3 µg/m³ | 0.3 µg/m³ | 0.4 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 0.5 µg/m³ | 1 µg/m³ | 3.3 µg/m³ | 6.1 µg/m³ | 7.4 µg/m³ | 8.9 µg/m³ | 7.8 µg/m³ | 7.3 µg/m³ | 5.5 µg/m³ | 2.3 µg/m³ | 0.7 µg/m³ | 0.9 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.