Is Grumantbyen hot in September?
Days are typically cold at 4°C, while nights average 0.3°C.
Svalbard and Jan Mayen · 1991–2020 normal
Typical September weather in Grumantbyen: 4°C by day, 0.3°C at night, 24 mm of rain over 7.5 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, September scores 5 out of 100 (July leads the year at 32). Daylight is calculated as 14 h 03 from latitude 78.18°.
September at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically cold at 4°C, while nights average 0.3°C.
The measured monthly average is 24 mm across about 8 wet days.
There are about 14 h 03 between sunrise and sunset at mid-month, calculated from the place latitude.
September ranks 9 of 12 in our weather comparison; July ranks first.
The evidence behind this page
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The weather comparison for Grumantbyen is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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