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Best time to visit · Iceland
On the climate data, the best time to visit Mývatn is June – August, scoring up to 53/100 with highs around 48°F (9°C) and 2.3 in (58 mm) of rain in June. The toughest months are October – December, mainly because of cool days.
Highs run from 29°F to 50°F across the year, and the yearly total is about 39.0 in (991 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 29°F-2°C | 29°F-1°C | 31°F-1°C | 35°F2°C | 40°F4°C | 48°F9°C | 50°F10°C | 48°F9°C | 43°F6°C | 36°F2°C | 31°F-1°C | 29°F-2°C |
| Avg low | 19°F-7°C | 19°F-7°C | 20°F-7°C | 24°F-4°C | 31°F0°C | 38°F4°C | 41°F5°C | 40°F4°C | 35°F2°C | 29°F-2°C | 22°F-5°C | 19°F-7°C |
| Rain/snow | 3.2 in82 mm | 2.7 in68 mm | 3.0 in77 mm | 2.7 in68 mm | 2.8 in71 mm | 2.3 in58 mm | 3.1 in78 mm | 3.3 in83 mm | 4.2 in106 mm | 4.1 in104 mm | 4.0 in101 mm | 3.7 in95 mm |
| Humidity | 94% | 93% | 93% | 92% | 89% | 87% | 89% | 90% | 92% | 94% | 95% | 94% |
| Cloud | 81% | 82% | 82% | 80% | 82% | 80% | 85% | 83% | 82% | 84% | 81% | 80% |
| Comfort | 38 | 39 | 38 | 40 | 39 | 53 | 53 | 51 | 40 | 34 | 36 | 37 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~487 m (1,598 ft) to Mývatn's ~276 m (906 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs near 29°F (-2°C) and lows down to 19°F (-7°C). About 9.6 in (245 mm) of rain or snow falls across these months, 25% of the year's total. December – February are cold enough for snow. It holds the toughest stretch on our comfort score (December), averaging 38/100.
Temperatures climb through the season, from 31°F highs in March to 40°F by May. It's the driest season, with only about 8.5 in (216 mm) of rain or snow, 22% of the year's total. March & April are cold enough for snow. Comfort scores sit mid-table, averaging 39/100.
Peak warmth: highs of 48–50°F (9–10°C). About 8.6 in (219 mm) of rain falls across these months, 22% of the year's total. Lows bottom out around 38°F (4°C). June – August are among the best-scoring months (season average 52/100).
Temperatures slide from 43°F highs in September to 31°F by November. It's the wettest season, with about 12.2 in (311 mm) of rain or snow, 31% of the year's total. November is cold enough for snow. Comfort scores bottom out in October & November; the season averages 37/100.
By comfort score: 3 Fair and 9 Tough. Tap a month for its own guide.
On the climate data, the best time to visit Mývatn is June – August, scoring up to 53/100 with highs around 48°F (9°C) and 2.3 in (58 mm) of rain in June. The toughest months are October – December, mainly because of cool days.
September is the wettest month, averaging about 4.2 in (106 mm) of rain. June is the driest, with about 2.3 in (58 mm). The yearly total is around 39.0 in (991 mm).
January is the coldest, with average lows of 19°F (-7°C) and highs of 29°F (-2°C). The warmest is July, with average highs of 50°F (10°C).
Not very: summer (June – August) humidity averages 89%, and highs peak around 50°F (10°C), so it rarely feels sticky.
On average, yes: lows fall below 32°F (0°C) in October – May, bottoming out around 19°F (-7°C) in January.
Poll the group on June – August dates, then plan the days, packing and costs together.
