Senja Temperature by Month
The average annual maximum temperature in Senja, Norway is 7°C (45°F), with daytime highs ranging from 0°C (32°F) in February to 16°C (61°F) in July. This page covers monthly averages, day-night differences, and how Senja compares to cities worldwide.
Senja Monthly Temperatures
In Senja, temperatures can shift dramatically between mild in summer and very cold in winter. Nights follow the same pattern, with lows ranging from 10°C (50°F) in July to -6°C (21°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Senja by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 205 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Senja vs Norway
The map below shows the annual temperature across Norway. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Senja vs World: Temperature Compared
Senja's average annual maximum temperature is 7°C (45°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Senja's weather — including monthly rainfall, sunshine hours, and humidity — visit our Senja climate page.
