Monthly climate guide
Alta weather in May
With highs near 3°C (38°F) and lows around -1°C (30°F), May feels cold in Alta. Rainfall averages about 76 mm (some rain) and the sky is often cloudy. Daytime highs are 4°C warmer than April and 6°C cooler than June.
What stands out in May
- Just 170 km apart, but Alta runs about 3°C cooler than Tromsø this month.
- There's little difference between day and night (around 5°C).
- Mornings start cold: the average low is -1°C, and frost is common.
- It warms up quickly from here: by June highs are about 6°C higher.
Avg high
3°C
38°F
Avg low
-1°C
30°F
Rainfall
76 mm
some rain
Humidity
89%
relative
Sky
75%
cloud · often cloudy
Alta weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | -8°C / 18°F | -13°C / 8°F | 59 mm | 97% | 78% |
| February | -7°C / 20°F | -12°C / 10°F | 52 mm | 96% | 80% |
| March | -4°C / 25°F | -10°C / 14°F | 79 mm | 93% | 79% |
| April | -1°C / 31°F | -6°C / 21°F | 61 mm | 91% | 78% |
| May | 3°C / 38°F | -1°C / 30°F | 76 mm | 89% | 75% |
| June | 10°C / 49°F | 4°C / 39°F | 119 mm | 86% | 81% |
| July | 14°C / 57°F | 8°C / 46°F | 105 mm | 86% | 77% |
| August | 12°C / 54°F | 7°C / 44°F | 100 mm | 89% | 78% |
| September | 8°C / 47°F | 3°C / 38°F | 72 mm | 92% | 81% |
| October | 1°C / 34°F | -2°C / 28°F | 72 mm | 96% | 84% |
| November | -3°C / 27°F | -7°C / 19°F | 70 mm | 96% | 81% |
| December | -5°C / 23°F | -10°C / 14°F | 68 mm | 97% | 84% |
What to pack for May
- A proper insulated winter coat
- A hat, scarf and gloves
- Thermal base layers and warm, grippy boots for icy mornings
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is May a good time to visit Alta?
Compare the months in the chart above to find your ideal window.
Best time to visit Alta →Other Norway cities in May
Cite or embed this data
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Alta weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/norway/alta/may
<a href="https://weathercompare.eu/weather/norway/alta/may">Alta weather in May</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/norway/alta" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Alta weather in May"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/norway/alta/may">Alta weather in May</a> – WeatherCompare</p>
Alta in May: quick answers
Is May a good time to visit Alta?
May is cool in Alta, with highs around 3°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Alta in May?
Average highs are about 3°C (38°F) and average lows about -1°C (30°F), based on 10 years of daily data.
Does it rain a lot in Alta in May?
Alta typically gets around 76 mm of rain in May — some rain.
Figures are long-term averages for the area around Alta (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.