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Average Weather in Ranua Finland

In Ranua, the summers are cool and partly cloudy and the winters are frigid, snowy, and overcast. Over the course of the year, the temperature typically varies from 4°F to 67°F and is rarely below -19°F or above 77°F.

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

Climate Summary

freezingvery coldcoldcoolcoolcoldfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow51%51%14%14%overcastclearprecipitation: 3.0 inprecipitation: 3.0 in0.8 in0.8 inmuggy: 1%muggy: 1%0%0%drydrytourism score: 5.6tourism score: 5.60.00.0
Click on each chart for more information.

Temperature

The warm season lasts for 3.0 months, from May 30 to September 1, with an average daily high temperature above 57°F. The hottest day of the year is July 22, with an average high of 67°F and low of 52°F.

The cold season lasts for 3.7 months, from November 20 to March 11, with an average daily high temperature below 26°F. The coldest day of the year is January 25, with an average low of 4°F and high of 16°F.

Average High and Low Temperature

Average High and Low Temperature in RanuawarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-20°F-20°F-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2516°FJan 2516°FJul 2267°FJul 2267°F4°F4°F52°F52°FMay 3057°FMay 3057°FSep 157°FSep 157°FNov 2026°FNov 2026°FMar 1126°FMar 1126°F41°F41°F43°F43°F17°F17°F12°F12°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

Average Hourly Temperature in RanuaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfrigidfreezingfreezingvery coldcoldcoolvery coldfrigidcomfortable
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.

Bethel, Alaska, United States (3,676 miles away) and Y, Alaska, United States (3,589 miles) are the far-away foreign places with temperatures most similar to Ranua (view comparison).

Clouds

In Ranua, 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 Ranua begins around April 20 and lasts for 5.0 months, ending around September 18. On July 5, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 51% of the time, and overcast or mostly cloudy 49% of the time.

The cloudier part of the year begins around September 18 and lasts for 7.0 months, ending around April 20. On January 28, the cloudiest day of the year, the sky is overcast or mostly cloudy 86% of the time, and clear, mostly clear, or partly cloudy 14% of the time.

Cloud Cover Categories

Cloud Cover Categories in RanuaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 551%Jul 551%Jan 2814%Jan 2814%Apr 2032%Apr 2032%Sep 1832%Sep 1832%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 Ranua varies throughout the year.

The wetter season lasts 6.0 months, from May 10 to November 11, with a greater than 28% chance of a given day being a wet day. The chance of a wet day peaks at 38% on July 28.

The drier season lasts 6.0 months, from November 11 to May 10. The smallest chance of a wet day is 17% on March 3.

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 in Ranua changes throughout the year.

Rain alone is the most common for 7.3 months, from April 4 to November 12. The highest chance of a day with rain alone is 38% on July 28.

Snow alone is the most common for 4.7 months, from November 12 to April 4. The highest chance of a day with snow alone is 18% on January 23.

Daily Chance of Precipitation

Daily Chance of Precipitation in RanuasnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 2838%Jul 2838%Mar 317%Mar 317%Apr 420%Apr 420%Nov 1227%Nov 1227%Jan 123%Jan 123%May 1028%May 1028%NowNowsnowrainmixed
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. Ranua experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.0 months, from April 3 to December 2, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 15, with an average total accumulation of 3.0 inches.

The rainless period of the year lasts for 4.0 months, from December 2 to April 3. The least rain falls around February 13, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

Average Monthly Rainfall in RanuarainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inJul 153.0 inJul 153.0 inFeb 130.1 inFeb 130.1 inApr 30.5 inApr 30.5 inDec 20.5 inDec 20.5 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. Ranua experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 7.2 months, from October 1 to May 7, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 12, with an average total liquid-equivalent accumulation of 0.9 inches.

The snowless period of the year lasts for 4.8 months, from May 7 to October 1. The least snow falls around July 28, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in RanuasnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 inJan 120.9 inJan 120.9 inJul 280.0 inJul 280.0 inOct 10.1 inOct 10.1 inMay 70.1 inMay 70.1 in
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

Due to its extreme latitude, Ranua experiences polar day (also known as the midnight Sun) during the summer. 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 summer in Ranua during 2021, the Sun is continuously above the horizon for 2.3 weeks, rising at 1:24 AM on June 13, and not setting again until 1:11 AM on June 29.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in RanuaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 9 minMar 2012 hr, 9 minMar 2024 hr, 0 minJun 2124 hr, 0 minJun 2112 hr, 19 minSep 2212 hr, 19 minSep 222 hr, 51 minDec 212 hr, 51 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.

Daylight saving time (DST) is observed in Ranua 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

Sunrise & Sunset with Twilight and Daylight Saving Time in RanuaJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 131:24 AMJun 131:24 AM1:11 AMJun 281:11 AMJun 28Dec 191:37 PMDec 191:37 PM10:47 AMDec 2310:47 AMDec 23Mar 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

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 Ranua, 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

Humidity Comfort Levels in RanuaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 240%Mar 240%Jul 291%Jul 291%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.

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 Ranua experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.8 months, from November 3 to April 28, with average wind speeds of more than 5.1 miles per hour. The windiest day of the year is January 24, with an average hourly wind speed of 6.2 miles per hour.

The calmer time of year lasts for 6.2 months, from April 28 to November 3. The calmest day of the year is July 30, with an average hourly wind speed of 4.0 miles per hour.

Average Wind Speed

Average Wind Speed in RanuawindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mphJan 246.2 mphJan 246.2 mphJul 304.0 mphJul 304.0 mphNov 35.1 mphNov 35.1 mphApr 285.1 mphApr 285.1 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 Ranua varies throughout the year.

The wind is most often from the west for 2.9 weeks, from May 24 to June 13, with a peak percentage of 28% on June 1. The wind is most often from the south for 11 months, from June 13 to May 24, with a peak percentage of 40% on January 1.

Wind Direction

Wind Direction in RanuaSWSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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

Ranua 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 significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.3 months, from July 6 to September 14, with an average temperature above 53°F. The day of the year with the warmest water is August 8, with an average temperature of 59°F.

The time of year with cooler water lasts for 5.7 months, from November 26 to May 16, with an average temperature below 36°F. The day of the year with the coolest water is February 28, with an average temperature of 31°F.

Average Water Temperature

Average Water Temperature in RanuawarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FAug 859°FAug 859°F31°FFeb 2831°FFeb 28Jul 653°FJul 653°FSep 1453°FSep 1453°FNov 2636°FNov 2636°FMay 1636°FMay 1636°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 Ranua 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 Ranua for general outdoor tourist activities is from late June to early August, with a peak score in the third week of July.

Tourism Score

Tourism Score in RanuaJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.65.60.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism 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 Ranua for hot-weather activities is from mid to late July, with a peak score in the third week of July.

Beach/Pool Score

Beach/Pool Score in RanuaJanFebMarAprMayJunJulAugSepOctNovDec002244668810101.81.80.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature
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 Ranua typically lasts for 3.7 months (115 days), from around May 21 to around September 12, rarely starting before May 3 or after June 9, and rarely ending before August 25 or after September 30.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Ranuagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 2150%May 2150%Sep 1250%Sep 1250%Jun 990%Jun 990%Aug 2590%Aug 2590%May 310%May 310%Sep 3010%Sep 3010%0%Nov 280%Nov 28Jul 15100%Jul 15100%NowNowfrigidfreezingcoldcoolvery 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.

Based on growing degree days alone, the first spring blooms in Ranua should appear around June 5, only rarely appearing before May 25 or after June 21.

Growing Degree Days

Growing Degree Days in RanuaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°FJun 590°FJun 590°FDec 31827°FDec 31827°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 2.7 months, from May 15 to August 5, with an average daily incident shortwave energy per square meter above 4.6 kWh. The brightest day of the year is June 23, with an average of 5.7 kWh.

The darker period of the year lasts for 5.1 months, from October 3 to March 5, with an average daily incident shortwave energy per square meter below 1.1 kWh. The darkest day of the year is December 22, with an average of 0.0 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in RanuabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhJun 235.7 kWhJun 235.7 kWhDec 220.0 kWhDec 220.0 kWhMay 154.6 kWhMay 154.6 kWhAug 54.6 kWhAug 54.6 kWhOct 31.1 kWhOct 31.1 kWhMar 51.1 kWhMar 51.1 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 Ranua are 65.917 deg latitude, 26.533 deg longitude, and 472 ft elevation.

The topography within 2 miles of Ranua contains only modest variations in elevation, with a maximum elevation change of 98 feet and an average elevation above sea level of 494 feet. Within 10 miles also contains only modest variations in elevation (295 feet). Within 50 miles contains only modest variations in elevation (1,404 feet).

The area within 2 miles of Ranua is covered by trees (50%), herbaceous vegetation (22%), and water (18%), within 10 miles by trees (68%) and herbaceous vegetation (27%), and within 50 miles by trees (79%) and herbaceous vegetation (14%).

Data Sources

This report illustrates the typical weather in Ranua, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Ranua.

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

The stations contributing to this reconstruction are: Rovaniemi Airport (31%, 79 kilometers, northwest); Kemi-Tornio Airport (26%, 89 kilometers, west); Oulu Airport (16%, 123 kilometers, southwest); Kuusamo Airport (16%, 123 kilometers, east); and Suomussalmi (11%, 161 kilometers, southeast).

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.