Average Weather in Hamina Finland
In Hamina, the summers are comfortable and partly cloudy and the winters are freezing, dry, and overcast. Over the course of the year, the temperature typically varies from 17°F to 71°F and is rarely below -2°F or above 80°F.
Based on the tourism score, the best time of year to visit Hamina for warm-weather activities is from late June to mid August.
The warm season lasts for 3.0 months, from June 4 to September 3, with an average daily high temperature above 62°F. The hottest day of the year is July 24, with an average high of 71°F and low of 57°F.
The cold season lasts for 3.7 months, from November 30 to March 20, with an average daily high temperature below 35°F. The coldest day of the year is February 7, with an average low of 17°F and high of 26°F.
Average High and Low Temperature
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 Hamina, 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 Hamina begins around April 21 and lasts for 5.6 months, ending around October 9. On July 17, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 58% of the time, and overcast or mostly cloudy 42% of the time.
The cloudier part of the year begins around October 9 and lasts for 6.4 months, ending around April 21. On January 23, the cloudiest day of the year, the sky is overcast or mostly cloudy 80% of the time, and clear, mostly clear, or partly cloudy 20% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Hamina varies throughout the year.
The wetter season lasts 7.6 months, from June 6 to January 26, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 33% on November 10.
The drier season lasts 4.4 months, from January 26 to June 6. The smallest chance of a wet day is 18% on March 4.
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 Hamina changes throughout the year.
Rain alone is the most common for 10 months, from March 3 to January 14. The highest chance of a day with rain alone is 32% on October 22.
Snow alone is the most common for 1.6 months, from January 14 to March 3. The highest chance of a day with snow alone is 12% on January 26.
Daily Chance of Precipitation
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. Hamina experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 12 months, from February 24 to February 11, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around October 11, with an average total accumulation of 2.3 inches.
The rainless period of the year lasts for 1.9 weeks, from February 11 to February 24. The least rain falls around February 18, with an average total accumulation of 0.5 inches.
Average Monthly Rainfall
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. Hamina experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.7 months, from October 29 to April 21, 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 28, with an average total liquid-equivalent accumulation of 0.6 inches.
The snowless period of the year lasts for 6.3 months, from April 21 to October 29. The least snow falls around August 1, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Hamina varies extremely over the course of the year. In 2021, the shortest day is December 21, with 5 hours, 41 minutes of daylight; the longest day is June 21, with 19 hours, 6 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 3:39 AM on June 19, and the latest sunrise is 5 hours, 40 minutes later at 9:20 AM on December 27. The earliest sunset is at 2:58 PM on December 16, and the latest sunset is 7 hours, 47 minutes later at 10:45 PM on June 22.
Daylight saving time (DST) is observed in Hamina 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
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 perceived humidity level in Hamina, 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Hamina experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 5.7 months, from September 16 to March 6, with average wind speeds of more than 7.9 miles per hour. The windiest day of the year is December 12, with an average hourly wind speed of 9.7 miles per hour.
The calmer time of year lasts for 6.3 months, from March 6 to September 16. The calmest day of the year is July 3, with an average hourly wind speed of 6.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Hamina varies throughout the year.
The wind is most often from the south for 3.2 months, from January 21 to April 28 and for 1.6 months, from October 29 to December 17, with a peak percentage of 35% on November 25. The wind is most often from the west for 6.0 months, from April 28 to October 29 and for 1.1 months, from December 17 to January 21, with a peak percentage of 35% on October 2.
Hamina 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 2.5 months, from July 2 to September 17, with an average temperature above 57°F. The day of the year with the warmest water is August 5, with an average temperature of 63°F.
The time of year with cooler water lasts for 4.7 months, from December 10 to May 1, with an average temperature below 38°F. The day of the year with the coolest water is February 25, with an average temperature of 31°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Hamina 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 Hamina for general outdoor tourist activities is from late June to mid August, with a peak score in the third week of July.
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 Hamina for hot-weather activities is from mid July to early August, with a peak score in the third week of July.
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.
The growing season in Hamina typically lasts for 5.4 months (167 days), from around May 3 to around October 16, rarely starting before April 15 or after May 20, and rarely ending before September 28 or after November 7.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Hamina should appear around May 25, only rarely appearing before May 15 or after June 7.
Growing Degree Days
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 10, with an average daily incident shortwave energy per square meter above 5.0 kWh. The brightest day of the year is June 29, with an average of 6.2 kWh.
The darker period of the year lasts for 4.5 months, from October 13 to February 27, 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
For the purposes of this report, the geographical coordinates of Hamina are 60.570 deg latitude, 27.198 deg longitude, and 36 ft elevation.
The topography within 2 miles of Hamina contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 22 feet. Within 10 miles also contains only modest variations in elevation (295 feet). Within 50 miles contains only modest variations in elevation (604 feet).
The area within 2 miles of Hamina is covered by artificial surfaces (42%), trees (23%), cropland (14%), and herbaceous vegetation (11%), within 10 miles by trees (52%) and water (25%), and within 50 miles by water (46%) and trees (42%).
This report illustrates the typical weather in Hamina, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Hamina.
For each station, the records are corrected for the elevation difference between that station and Hamina 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 Hamina is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Hamina and a given station.
The stations contributing to this reconstruction are: Utti Airport (63%, 39 kilometers, north); Lappeenranta Airport (25%, 74 kilometers, northeast); and Helsinki-Malmi Airport (12%, 124 kilometers, west).
Time zones for airports and weather stations are provided by AskGeo.com .