Climate Chart of Reykjavík, Iceland
Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023
For Reykjavík, Iceland, the climate data cover 2013–2023. Across the period, monthly mean temperatures average 4.7 °C, while the warmest monthly mean is 11.6 °C in July and the coolest is -1.2 °C in December. These figures describe monthly means rather than daytime highs, so they provide a broad guide to the year's temperature pattern rather than a forecast for any particular day.
Climate overview
Temperature
The warmest monthly mean temperature is 11.6 °C in July, while the coolest is -1.2 °C in December. The annual overview's average across monthly means is 4.7 °C; none of these figures represents a daytime maximum, and monthly means cannot show how much temperatures may vary from day to day.
Rain
Mean daily rainfall is highest at 5.02 mm/day in September and lowest at 2.23 mm/day in December. The average of the monthly mean daily amounts is 3.23 mm/day. These are daily averages, not monthly totals, and they do not indicate how often rain falls or guarantee conditions on a particular day.
Sunshine
Mean daily sunshine reaches its high of 9.47 hours/day in July and its low of 0.71 hours/day in December. The unweighted average across monthly means is 5.52 hours/day hours per day. Sunshine duration is not the same as day length, and monthly averages do not promise a particular amount of sun during a visit.
Snow
Mean daily snowfall reaches its highest monthly value, 17.73 mm/day, in February; the average across monthly means is 6.43 mm/day. These averages describe snowfall amounts, not the number of snowy days, snow depth, or whether snow cover or skiing conditions will be present.
Best Travel Time Guide for Reykjavík, Iceland: Ideal Seasons and Weather Insights
Visitors prioritising lower average rainfall can consider December, when mean daily rainfall is 2.23 mm/day; this is a comparison of averages, not a guarantee of dry days or a measure of rain frequency. For rain preparation, note that the highest mean daily rainfall is 5.02 mm/day in September, and plan for changeable conditions rather than relying on the monthly average as a forecast. For cooler monthly average temperatures, December is the relevant option, with a mean of -1.2 °C. Visitors planning outdoor sightseeing around sunshine may also weigh the monthly contrast: mean daily sunshine is highest at 9.47 hours/day in July and lowest at 0.71 hours/day in December. These criteria point to different considerations, not one universally best time to visit, and sunshine hours are not a measure of daylight length.
The recorded highest monthly mean daily snowfall is 17.73 mm/day in February. This can help visitors account for snowfall in their planning, but the mean does not establish how many snowy days to expect, snow depth or cover, or skiing conditions; check conditions closer to travel.
Climate Data Overview for Reykjavík, Iceland
Explore the comprehensive climate data for Reykjavík, Iceland. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.
| Month | Average: Temperature °C | Rain (mm) / day | Snow (mm) / day | Sunshine (h) / day |
|---|---|---|---|---|
| Jan | -0.8 | 2.66 | 15.18 | 1.18 |
| Feb | -0.0 | 2.89 | 17.73 | 3.09 |
| Mar | 0.6 | 2.35 | 12.34 | 5.89 |
| Apr | 3.7 | 3.39 | 6.41 | 7.67 |
| May | 6.5 | 3.59 | 1.40 | 9.37 |
| Jun | 9.9 | 3.27 | 0.00 | 8.98 |
| Jul | 11.6 | 2.77 | 0.00 | 9.47 |
| Aug | 11.0 | 3.19 | 0.00 | 8.40 |
| Sep | 8.1 | 5.02 | 0.36 | 5.75 |
| Oct | 4.6 | 4.15 | 2.11 | 4.11 |
| Nov | 2.0 | 3.23 | 6.89 | 1.56 |
| Dec | -1.2 | 2.23 | 14.74 | 0.71 |
| Average | 4.7 | 3.23 | 6.43 | 5.52 |
