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Climate and Average Weather Year Round at Pori Airport Finland

At Pori Airport, the summers are comfortable and partly cloudy and the winters are long, freezing, dry, and mostly cloudy. Over the course of the year, the temperature typically varies from 16°F to 70°F and is rarely below -4°F or above 80°F.

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

Climate at Pori Airport

freezingvery coldcoldcoolcomfortablecoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow56%56%26%26%overcastclearprecipitation: 2.3 inprecipitation: 2.3 in0.9 in0.9 inmuggy: 2%muggy: 2%0%0%drydrytourism score: 6.6tourism score: 6.60.00.0
Pori Airport weather by month. Click on each chart for more information.

Average Temperature at Pori Airport

The warm season lasts for 3.1 months, from June 1 to September 4, with an average daily high temperature above 62°F. The hottest day of the year is July 22, with an average high of 70°F and low of 54°F.

The cold season lasts for 3.9 months, from November 22 to March 18, with an average daily high temperature below 36°F. The coldest day of the year is February 7, with an average low of 16°F and high of 27°F.

Average High and Low Temperature at Pori Airport

Average High and Low Temperature at Pori AirportwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-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°FFeb 727°FFeb 727°FJul 2270°FJul 2270°F16°F16°F54°F54°FJun 162°FJun 162°FSep 462°FSep 462°FNov 2236°FNov 2236°FMar 1836°FMar 1836°F44°F44°F47°F47°F27°F27°F23°F23°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 at Pori Airport

Average Hourly Temperature at Pori AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingvery coldvery coldcoldcoldcoolcomfortable
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.

Haines, Alaska, United States (4,014 miles away) and Springhill, Canada (3,409 miles) are the far-away foreign places with temperatures most similar to Pori Airport (view comparison).

Compare Pori Airport to another city:

Clouds

At Pori Airport, 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 at Pori Airport begins around April 22 and lasts for 5.4 months, ending around October 2. On July 17, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 56% of the time, and overcast or mostly cloudy 44% of the time.

The cloudier part of the year begins around October 2 and lasts for 6.6 months, ending around April 22. On January 26, the cloudiest day of the year, the sky is overcast or mostly cloudy 74% of the time, and clear, mostly clear, or partly cloudy 26% of the time.

Cloud Cover Categories at Pori Airport

Cloud Cover Categories at Pori AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1756%Jul 1756%Jan 2626%Jan 2626%Apr 2241%Apr 2241%Oct 242%Oct 242%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 at Pori Airport varies throughout the year.

The wetter season lasts 7.7 months, from June 1 to January 24, with a greater than 25% chance of a given day being a wet day. The chance of a wet day peaks at 32% on October 19.

The drier season lasts 4.2 months, from January 24 to June 1. The smallest chance of a wet day is 18% on February 28.

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 at Pori Airport changes throughout the year.

Rain alone is the most common for 11 months, from February 15 to February 21 and from March 2 to January 16. The highest chance of a day with rain alone is 30% on September 27.

Snow alone is the most common for 1.3 months, from January 16 to February 15 and from February 21 to March 2. The highest chance of a day with snow alone is 10% on January 18.

Daily Chance of Precipitation at Pori Airport

Daily Chance of Precipitation at Pori AirportsnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Oct 1932%Oct 1932%Feb 2818%Feb 2818%Jan 1626%Jan 1626%Jan 128%Jan 128%Jun 125%Jun 125%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. Pori Airport experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Pori Airport. The most rain falls during the 31 days centered around August 12, with an average total accumulation of 2.3 inches.

The least rain falls around February 16, with an average total accumulation of 0.5 inches.

Average Monthly Rainfall at Pori Airport

Average Monthly Rainfall at Pori AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 inAug 122.3 inAug 122.3 inFeb 160.5 inFeb 160.5 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. Pori Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 5.9 months, from October 21 to April 17, 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 16, with an average total liquid-equivalent accumulation of 0.6 inches.

The snowless period of the year lasts for 6.1 months, from April 17 to October 21. The least snow falls around July 25, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall at Pori Airport

Average Liquid-Equivalent Monthly Snowfall at Pori AirportsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inJan 160.6 inJan 160.6 inJul 250.0 inJul 250.0 inOct 210.1 inOct 210.1 inApr 170.1 inApr 170.1 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

The length of the day at Pori Airport varies extremely over the course of the year. In 2021, the shortest day is December 21, with 5 hours, 22 minutes of daylight; the longest day is June 21, with 19 hours, 29 minutes of daylight.

Hours of Daylight and Twilight at Pori Airport

Hours of Daylight and Twilight at Pori AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2019 hr, 29 minJun 2119 hr, 29 minJun 2112 hr, 16 minSep 2212 hr, 16 minSep 225 hr, 22 minDec 215 hr, 22 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 3:49 AM on June 19, and the latest sunrise is 6 hours, 2 minutes later at 9:51 AM on December 26. The earliest sunset is at 3:10 PM on December 17, and the latest sunset is 8 hours, 9 minutes later at 11:19 PM on June 22.

Daylight saving time (DST) is observed at Pori Airport 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 at Pori Airport

Sunrise & Sunset with Twilight and Daylight Saving Time at Pori AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 193:49 AMJun 193:49 AM11:19 PMJun 2211:19 PMJun 22Dec 173:10 PMDec 173:10 PM9:51 AMDec 269:51 AMDec 26Mar 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 at Pori Airport

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 at Pori Airport, 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, staying within 1% of 1% throughout.

Humidity Comfort Levels at Pori Airport

Humidity Comfort Levels at Pori AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 150%Jan 150%Jul 302%Jul 302%NowNowdrydrycomfortablecomfortablehumidhumid
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 at Pori Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.2 months, from September 16 to March 23, with average wind speeds of more than 7.2 miles per hour. The windiest day of the year is December 11, with an average hourly wind speed of 8.6 miles per hour.

The calmer time of year lasts for 5.8 months, from March 23 to September 16. The calmest day of the year is July 8, with an average hourly wind speed of 5.8 miles per hour.

Average Wind Speed at Pori Airport

Average Wind Speed at Pori AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphDec 118.6 mphDec 118.6 mphJul 85.8 mphJul 85.8 mphSep 167.2 mphSep 167.2 mphMar 237.2 mphMar 237.2 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 at Pori Airport is from the south throughout the year.

Wind Direction at Pori Airport

Wind Direction at Pori AirportJanFebMarAprMayJunJulAugSepOctNovDec0%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

Pori Airport 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 4 to September 14, with an average temperature above 56°F. The day of the year with the warmest water is August 6, with an average temperature of 62°F.

The time of year with cooler water lasts for 4.6 months, from December 18 to May 7, with an average temperature below 38°F. The day of the year with the coolest water is March 6, with an average temperature of 33°F.

Average Water Temperature at Pori Airport

Average Water Temperature at Pori AirportwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FAug 662°FAug 662°F33°FMar 633°FMar 6Jul 456°FJul 456°FSep 1456°FSep 1456°FDec 1838°FDec 1838°FMay 738°FMay 738°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 at Pori Airport 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 Pori Airport for general outdoor tourist activities is from late June to mid August, with a peak score in the third week of July.

Tourism Score at Pori Airport

Tourism Score at Pori Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.66.60.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 Pori Airport for hot-weather activities is from mid July to early August, with a peak score in the third week of July.

Beach/Pool Score at Pori Airport

Beach/Pool Score at Pori AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.62.60.00.0NowNowprecipitationprecipitationcloudsclouds beach/pool score
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 at Pori Airport typically lasts for 4.4 months (136 days), from around May 15 to around September 28, rarely starting before April 28 or after June 1, and rarely ending before September 7 or after October 17.

Time Spent in Various Temperature Bands and the Growing Season at Pori Airport

Time Spent in Various Temperature Bands and the Growing Season at Pori Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 1550%May 1550%Sep 2850%Sep 2850%Jun 190%Jun 190%Sep 790%Sep 790%Apr 2810%Apr 2810%Oct 1710%Oct 1710%0%Feb 200%Feb 20Jul 20100%Jul 20100%NowNowfrigidfreezingvery coldcoldcoolcomfortablewarm
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 at Pori Airport should appear around May 23, only rarely appearing before May 12 or after June 9.

Growing Degree Days at Pori Airport

Growing Degree Days at Pori AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°F1,400°F1,400°FMay 2390°FMay 2390°FAug 12900°FAug 12900°FDec 311,193°FDec 311,193°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 3.1 months, from May 6 to August 9, with an average daily incident shortwave energy per square meter above 5.0 kWh. The brightest day of the year is June 23, with an average of 6.2 kWh.

The darker period of the year lasts for 4.5 months, from October 13 to February 28, with an average daily incident shortwave energy per square meter below 1.3 kWh. The darkest day of the year is December 21, with an average of 0.1 kWh.

Average Daily Incident Shortwave Solar Energy at Pori Airport

Average Daily Incident Shortwave Solar Energy at Pori AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 236.2 kWhJun 236.2 kWhDec 210.1 kWhDec 210.1 kWhMay 65.0 kWhMay 65.0 kWhAug 95.0 kWhAug 95.0 kWhOct 131.3 kWhOct 131.3 kWhFeb 281.3 kWhFeb 281.3 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 Pori Airport are 61.462 deg latitude, 21.800 deg longitude, and 33 ft elevation.

The topography within 2 miles of Pori Airport is essentially flat, with a maximum elevation change of 62 feet and an average elevation above sea level of 24 feet. Within 10 miles is essentially flat (203 feet). Within 50 miles contains only modest variations in elevation (755 feet).

The area within 2 miles of Pori Airport is covered by artificial surfaces (59%), cropland (20%), and trees (20%), within 10 miles by trees (56%) and cropland (27%), and within 50 miles by trees (46%) and water (37%).

Data Sources

This report illustrates the typical weather at Pori Airport, 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

Pori Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back are Turku Airport, Seinajoki-Ilmajok Airport, Tampere–Pirkkala Airport, Mariehamn Airport, Ahtari, and Halli Airport.

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.