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January Weather in Tromsø Norway

Daily high temperatures are around 29°F, rarely falling below 18°F or exceeding 40°F.

Daily low temperatures are around 21°F, rarely falling below 9°F or exceeding 33°F. The lowest daily average low temperature is 21°F on January 25.

For reference, on July 23, the hottest day of the year, temperatures in Tromsø typically range from 48°F to 59°F, while on January 25, the coldest day of the year, they range from 21°F to 29°F.

Average High and Low Temperature in January in Tromsø

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in January in Tromsø

Average Hourly Temperature in January in TromsøJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMDecFebfreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Kodiak Station, Alaska, United States (3,627 miles away) is the far-away foreign place with temperatures most similar to Tromsø (view comparison).

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The month of January in Tromsø experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 79% throughout the month.

The clearest day of the month is January 24, with clear, mostly clear, or partly cloudy conditions 22% of the time.

For reference, on December 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 80%, while on May 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 44%.

Cloud Cover Categories in January in Tromsø

Cloud Cover Categories in January in TromsøJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 121%Jan 121%Jan 3122%Jan 3122%Jan 1121%Jan 1121%Jan 2121%Jan 2121%clearpartly cloudymostly cloudyovercastmostly clear
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Tromsø, the chance of a wet day over the course of January is essentially constant, remaining around 42% throughout.

For reference, the year's highest daily chance of a wet day is 49% on October 20, and its lowest chance is 32% on May 28.

Over the course of January in Tromsø, the chance of a day with only rain decreases from 13% to 10%, the chance of a day with mixed snow and rain increases from 11% to 13%, and the chance of a day with only snow remains an essentially constant 19% throughout.

Probability of Precipitation in January in Tromsø

Probability of Precipitation in January in TromsøJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%DecFebJan 143%Jan 143%Jan 3141%Jan 3141%Jan 1141%Jan 1141%Jan 2141%Jan 2141%snowmixedrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during January in Tromsø is essentially constant, remaining about 1.7 inches throughout, and rarely exceeding 4.0 inches or falling below 0.1 inches.

Average Monthly Rainfall in January in Tromsø

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during January in Tromsø is increasing, starting the month at 14.6 inches, when it rarely exceeds 27.4 inches or falls below 3.0 inches, and ending the month at 17.5 inches, when it rarely exceeds 33.3 inches or falls below 4.0 inches.

The highest average 31-day accumulation is 17.5 inches on January 31.

Average Monthly Snowfall in January in Tromsø

The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Due to its extreme latitude, Tromsø experiences polar day (also known as the midnight Sun) during the summer and polar night during the winter. These are periods of time in which the sun is continuously above or below the horizon for more than one day. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography.

In the winter in Tromsø during 2024, the Sun is continuously below the horizon for 1.6 months, setting at 11:55 AM on November 26, and not rising again until 11:49 AM on January 15. As such, January begins the month in polar night, which ends before the month is out.

The longest day of the month is January 31, with 4 hours, 52 minutes of daylight.

Hours of Daylight and Twilight in January in Tromsø

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the month in Tromsø is 11:49 AM on January 15 and the earliest sunrise is 2 hours, 17 minutes earlier at 9:32 AM on January 31.

The earliest sunset is 11:57 AM on January 15 and the latest sunset is 2 hours, 26 minutes later at 2:24 PM on January 31.

Daylight saving time is observed in Tromsø during 2024, but it neither starts nor ends during January, so the entire month is in daylight saving time.

Sunrise & Sunset with Twilight in January in Tromsø

Sunrise & Sunset with Twilight in January in TromsøJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMDecFeb11:49 AM11:49 AMJan 1511:57 AMJan 1511:57 AM9:32 AM9:32 AMJan 312:24 PMJan 312:24 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of January. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in January in Tromsø

Solar Elevation and Azimuth in January in TromsøJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMDecFeb00
northeastsouthwest
Solar elevation and azimuth over the course of January 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for January 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in January in Tromsø

Moon Rise, Set & Phases in January in TromsøJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 271:34 AMDec 271:34 AMJan 256:55 PMJan 256:55 PMFeb 1012:00 AMFeb 1012:00 AMFeb 241:31 PMFeb 241:31 PM12:00 AM12:00 AM12:00 AM12:00 AM12:00 AM12:00 AM12:00 AM12:00 AM9:52 AM9:52 AM3:39 PM3:39 PM3:43 PM3:43 PM8:08 AM8:08 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Jan 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
77%-11:55 AMWNW8:38 PMENE3:36 AMS251,496 mi
2
69%-11:30 AMWNW10:26 PME4:15 AMS251,510 mi
3
59%-11:07 AMW-4:53 AMS250,717 mi
4
50%12:13 AME10:44 AMWSW-5:32 AMS249,095 mi
5
40%2:04 AMESE10:17 AMSW-6:13 AMS246,689 mi
6
30%4:13 AMSE9:39 AMSW-6:57 AMS243,617 mi
7
21%7:46 AMS240,072 mi
8
13%8:41 AMS236,315 mi
9
6%9:42 AMS232,664 mi
10
2%10:49 AMS229,458 mi
11
0%11:57 AMS227,007 mi
12
1%1:03 PMS225,528 mi
13
6%12:19 PMSSE3:49 PMSSW-2:04 PMS225,107 mi
14
13%11:18 AMSE6:45 PMSW-3:00 PMS225,689 mi
15
22%10:45 AMESE9:05 PMWSW-3:51 PMS227,116 mi
16
33%10:18 AME11:16 PMW-4:39 PMS229,165 mi
17
45%9:51 AMENE--5:25 PMS231,604 mi
18
50%-1:28 AMWNW9:20 AMNE6:12 PMS234,223 mi
19
67%-3:59 AMNW8:33 AMNNE7:00 PMS236,861 mi
20
77%7:50 PMS239,410 mi
21
85%8:42 PMS241,809 mi
22
92%9:34 PMS244,032 mi
23
97%10:27 PMS246,064 mi
24
99%11:18 PMS247,890 mi
25
100%--
26
100%12:06 AMS249,475 mi
27
99%-10:54 AMNNW4:05 PMNE12:51 AMS250,764 mi
28
95%-10:15 AMNW6:10 PMENE1:32 AMS251,675 mi
29
90%-9:48 AMWNW8:01 PMENE2:12 AMS252,115 mi
30
84%-9:25 AMW9:46 PME2:50 AMS251,980 mi
31
76%-9:02 AMWSW11:34 PMESE3:29 AMS251,181 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Tromsø is essentially constant during January, remaining around 0% throughout.

For reference, on July 5, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in January in Tromsø

Humidity Comfort Levels in January in TromsøJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 10%Jan 10%Jan 310%Jan 310%Jan 110%Jan 110%Jan 210%Jan 210%drydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Tromsø is essentially constant during January, remaining within 0.2 miles per hour of 10.9 miles per hour throughout.

For reference, on January 30, the windiest day of the year, the daily average wind speed is 11.1 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 5.1 miles per hour.

The highest daily average wind speed during January is 11.1 miles per hour on January 30.

Average Wind Speed in January in Tromsø

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Tromsø throughout January is predominantly from the south, with a peak proportion of 49% on January 9.

Wind Direction in January in Tromsø

Wind Direction in January in TromsøJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Tromsø is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Tromsø is essentially constant during January, remaining within 1°F of 41°F throughout.

Average Water Temperature in January in Tromsø

Average Water Temperature in January in TromsøJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313136°F36°F37°F37°F38°F38°F39°F39°F40°F40°F41°F41°F42°F42°F43°F43°F44°F44°F45°F45°F46°F46°FDecFebJan 142°FJan 142°FJan 3140°FJan 3140°FJan 1141°FJan 1141°FJan 2140°FJan 2140°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Tromsø typically lasts for 4.3 months (132 days), from around May 15 to around September 24, rarely starting before April 29 or after June 1, and rarely ending before September 3 or after October 13.

The month of January in Tromsø is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in January in Tromsø

Time Spent in Various Temperature Bands and the Growing Season in January in TromsøJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFeb0%Jan 160%Jan 160%Feb 220%Feb 22frigidfreezingvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Tromsø are essentially constant during January, remaining around 0°F throughout.

Growing Degree Days in January in Tromsø

Growing Degree Days in January in TromsøJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0°F0.0°F0.1°F0.1°F0.2°F0.2°F0.3°F0.3°F0.4°F0.4°F0.5°F0.5°F0.6°F0.6°F0.7°F0.7°F0.8°F0.8°F0.9°F0.9°F1.0°F1.0°FDecFebJan 10°FJan 10°FJan 310°FJan 310°FJan 110°FJan 110°FJan 210°FJan 210°F
The average growing degree days accumulated over the course of January, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Tromsø is essentially constant during January, remaining around 0.0 kWh throughout.

Average Daily Incident Shortwave Solar Energy in January in Tromsø

Average Daily Incident Shortwave Solar Energy in January in TromsøJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.1 kWh0.1 kWh0.2 kWh0.2 kWh0.3 kWh0.3 kWh0.4 kWh0.4 kWh0.5 kWh0.5 kWh0.6 kWh0.6 kWh0.7 kWh0.7 kWh0.8 kWh0.8 kWh0.9 kWh0.9 kWh1.0 kWh1.0 kWh1.1 kWh1.1 kWhDecFebJan 10.0 kWhJan 10.0 kWhJan 310.1 kWhJan 310.1 kWhJan 110.0 kWhJan 110.0 kWhJan 210.0 kWhJan 210.0 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Tromsø are 69.649 deg latitude, 18.955 deg longitude, and 46 ft elevation.

The topography within 2 miles of Tromsø contains large variations in elevation, with a maximum elevation change of 1,982 feet and an average elevation above sea level of 209 feet. Within 10 miles contains large variations in elevation (4,003 feet). Within 50 miles also contains extreme variations in elevation (5,981 feet).

The area within 2 miles of Tromsø is covered by trees (36%), artificial surfaces (36%), and water (17%), within 10 miles by trees (22%) and sparse vegetation (22%), and within 50 miles by water (43%) and trees (19%).

This report illustrates the typical weather in Tromsø, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Tromsø.

For each station, the records are corrected for the elevation difference between that station and Tromsø according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Tromsø is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Tromsø and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Tromsø and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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