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Climate and Average Weather Year Round in Mosterhamn Norway

In Mosterhamn, the summers are cool; the winters are long, very cold, and windy; and it is wet and mostly cloudy year round. Over the course of the year, the temperature typically varies from 30°F to 64°F and is rarely below 16°F or above 74°F.

Based on the tourism score, the best time of year to visit Mosterhamn for warm-weather activities is from early July to late August.

Climate in Mosterhamn

very coldcoldcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow50%50%27%27%overcastclearprecipitation: 8.9 inprecipitation: 8.9 in3.1 in3.1 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 5.1tourism score: 5.10.00.0
Mosterhamn weather by month. Click on each chart for more information.

Average Temperature in Mosterhamn

The warm season lasts for 3.0 months, from June 11 to September 12, with an average daily high temperature above 59°F. The hottest day of the year is August 5, with an average high of 64°F and low of 54°F.

The cold season lasts for 4.2 months, from November 21 to March 26, with an average daily high temperature below 43°F. The coldest day of the year is February 8, with an average low of 30°F and high of 38°F.

Average High and Low Temperature in Mosterhamn

Average High and Low Temperature in MosterhamnwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 838°FFeb 838°FAug 564°FAug 564°F30°F30°F54°F54°FJun 1159°FJun 1159°FSep 1259°FSep 1259°FNov 2143°FNov 2143°FMar 2643°FMar 2643°F48°F48°F49°F49°F35°F35°F34°F34°FNowNow
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 entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Mosterhamn

Average Hourly Temperature in MosterhamnJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcool
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.

Ketchikan, Alaska, United States (4,149 miles away) is the far-away foreign place with temperatures most similar to Mosterhamn (view comparison).

Compare Mosterhamn to another city:

Clouds

In Mosterhamn, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Mosterhamn begins around April 7 and lasts for 5.5 months, ending around September 23. On June 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 50% of the time, and overcast or mostly cloudy 50% of the time.

The cloudier part of the year begins around September 23 and lasts for 6.5 months, ending around April 7. On January 22, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% of the time.

Cloud Cover Categories in Mosterhamn

Cloud Cover Categories in MosterhamnclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 1050%Jun 1050%Jan 2227%Jan 2227%Apr 738%Apr 738%Sep 2339%Sep 2339%NowNowclearmostly clearpartly cloudymostly cloudyovercast
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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Mosterhamn varies throughout the year.

The wetter season lasts 7.2 months, from August 16 to March 23, with a greater than 47% chance of a given day being a wet day. The chance of a wet day peaks at 60% on January 1.

The drier season lasts 4.8 months, from March 23 to August 16. The smallest chance of a wet day is 33% on May 2.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 58% on November 10.

Daily Chance of Precipitation in Mosterhamn

Daily Chance of Precipitation in MosterhamnwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 160%Jan 160%May 233%May 233%Aug 1647%Aug 1647%Mar 2347%Mar 2347%NowNowrainmixed
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 months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Mosterhamn experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Mosterhamn. The most rain falls during the 31 days centered around December 25, with an average total accumulation of 8.6 inches.

The least rain falls around May 12, with an average total accumulation of 3.1 inches.

Average Monthly Rainfall in Mosterhamn

Average Monthly Rainfall in MosterhamnJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 inDec 258.6 inDec 258.6 inMay 123.1 inMay 123.1 inNowNow
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 liquid-equivalent snowfall.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Mosterhamn experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 4.3 months, from November 24 to April 1, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around February 2, with an average total liquid-equivalent accumulation of 0.5 inches.

The snowless period of the year lasts for 7.7 months, from April 1 to November 24. The least snow falls around July 24, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall in Mosterhamn

Average Liquid-Equivalent Monthly Snowfall in MosterhamnsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inFeb 20.5 inFeb 20.5 inJul 240.0 inJul 240.0 inNov 240.1 inNov 240.1 inApr 10.1 inApr 10.1 inNowNow
The average liquid-equivalent 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.

Sun

The length of the day in Mosterhamn varies extremely over the course of the year. In 2021, the shortest day is December 21, with 5 hours, 58 minutes of daylight; the longest day is June 21, with 18 hours, 45 minutes of daylight.

Hours of Daylight and Twilight in Mosterhamn

Hours of Daylight and Twilight in MosterhamnJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2018 hr, 45 minJun 2118 hr, 45 minJun 2112 hr, 15 minSep 2212 hr, 15 minSep 225 hr, 58 minDec 215 hr, 58 minDec 21nightnightdayNowNow
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 earliest sunrise is at 4:17 AM on June 19, and the latest sunrise is 5 hours, 22 minutes later at 9:39 AM on December 27. The earliest sunset is at 3:34 PM on December 16, and the latest sunset is 7 hours, 29 minutes later at 11:03 PM on June 23.

Daylight saving time (DST) is observed in Mosterhamn during 2021, starting in the spring on March 28, lasting 7.1 months, and ending in the fall on October 31.

Sunrise & Sunset with Twilight and Daylight Saving Time in Mosterhamn

Sunrise & Sunset with Twilight and Daylight Saving Time in MosterhamnJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 194:17 AMJun 194:17 AM11:03 PMJun 2311:03 PMJun 23Dec 163:34 PMDec 163:34 PM9:39 AMDec 279:39 AMDec 27Mar 28DSTMar 28DSTDSTOct 31DSTOct 31daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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 transitions to and from daylight saving time are indicated by the 'DST' labels.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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.

Moon Rise, Set & Phases in Mosterhamn

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.

Humidity

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 perceived humidity level in Mosterhamn, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels in Mosterhamn

Humidity Comfort Levels in MosterhamnJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 10%Feb 10%Aug 150%Aug 150%NowNowdrydry
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.

Wind

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 Mosterhamn experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.8 months, from October 1 to March 28, with average wind speeds of more than 10.7 miles per hour. The windiest day of the year is January 7, with an average hourly wind speed of 13.5 miles per hour.

The calmer time of year lasts for 6.2 months, from March 28 to October 1. The calmest day of the year is July 14, with an average hourly wind speed of 7.9 miles per hour.

Average Wind Speed in Mosterhamn

Average Wind Speed in MosterhamnwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mph22 mph22 mphJan 713.5 mphJan 713.5 mphJul 147.9 mphJul 147.9 mphOct 110.7 mphOct 110.7 mphMar 2810.7 mphMar 2810.7 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Mosterhamn varies throughout the year.

The wind is most often from the north for 1.6 months, from May 21 to July 10, with a peak percentage of 36% on June 14. The wind is most often from the south for 10 months, from July 10 to May 21, with a peak percentage of 42% on January 1.

Wind Direction in Mosterhamn

Wind Direction in MosterhamnSNSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
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).

Water Temperature

Mosterhamn 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 water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.6 months, from July 6 to September 25, with an average temperature above 56°F. The day of the year with the warmest water is August 11, with an average temperature of 60°F.

The time of year with cooler water lasts for 4.1 months, from December 26 to April 30, with an average temperature below 44°F. The day of the year with the coolest water is March 13, with an average temperature of 41°F.

Average Water Temperature in Mosterhamn

Average Water Temperature in MosterhamnwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°FAug 1160°FAug 1160°F41°FMar 1341°FMar 13Jul 656°FJul 656°FSep 2556°FSep 2556°FDec 2644°FDec 2644°FApr 3044°FApr 3044°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Mosterhamn throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Mosterhamn for general outdoor tourist activities is from early July to late August, with a peak score in the first week of August.

Tourism Score in Mosterhamn

Tourism Score in Mosterhamnbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.15.10.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Mosterhamn for hot-weather activities is from late July to mid August, with a peak score in the first week of August.

Beach/Pool Score in Mosterhamn

Beach/Pool Score in MosterhamnJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.90.90.00.0NowNowprecipitationprecipitationcloudsclouds
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

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 Mosterhamn typically lasts for 6.2 months (189 days), from around April 22 to around October 27, rarely starting before April 1 or after May 11, and rarely ending before October 5 or after November 30.

Time Spent in Various Temperature Bands and the Growing Season in Mosterhamn

Time Spent in Various Temperature Bands and the Growing Season in Mosterhamngrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 2250%Apr 2250%Oct 2750%Oct 2790%May 1190%May 1190%Oct 590%Oct 510%Apr 110%Apr 110%Nov 3010%Nov 300%Feb 60%Feb 6Jul 22100%Jul 22100%NowNowfreezingvery coldcoldcoolfrigidcomfortable
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.

Based on growing degree days alone, the first spring blooms in Mosterhamn should appear around May 30, only rarely appearing before May 16 or after June 23.

Growing Degree Days in Mosterhamn

Growing Degree Days in MosterhamnJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°FMay 3090°FMay 3090°FOct 3900°FOct 3900°FDec 31936°FDec 31936°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.0 months, from May 6 to August 5, with an average daily incident shortwave energy per square meter above 4.9 kWh. The brightest day of the year is June 14, with an average of 6.0 kWh.

The darker period of the year lasts for 4.7 months, from October 13 to March 3, with an average daily incident shortwave energy per square meter below 1.3 kWh. The darkest day of the year is December 23, with an average of 0.2 kWh.

Average Daily Incident Shortwave Solar Energy in Mosterhamn

Average Daily Incident Shortwave Solar Energy in MosterhamnbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 146.0 kWhJun 146.0 kWhDec 230.2 kWhDec 230.2 kWhMay 64.9 kWhMay 64.9 kWhAug 54.9 kWhAug 54.9 kWhOct 131.3 kWhOct 131.3 kWhMar 31.3 kWhMar 31.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Mosterhamn are 59.699 deg latitude, 5.386 deg longitude, and 30 ft elevation.

The topography within 2 miles of Mosterhamn contains only modest variations in elevation, with a maximum elevation change of 220 feet and an average elevation above sea level of 25 feet. Within 10 miles contains only modest variations in elevation (1,745 feet). Within 50 miles contains very significant variations in elevation (5,466 feet).

The area within 2 miles of Mosterhamn is covered by water (75%) and trees (13%), within 10 miles by water (48%) and trees (31%), and within 50 miles by water (58%) and trees (17%).

Data Sources

This report illustrates the typical weather in Mosterhamn, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Mosterhamn.

For each station, the records are corrected for the elevation difference between that station and Mosterhamn 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 Mosterhamn is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mosterhamn and a given station.

The stations contributing to this reconstruction are: Haugesund / Karmoy (ENHD, 68%, 41 kilometers, south) and Bergen / Flesland (ENBR, 32%, 67 kilometers, north).

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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.