Climate and Average Weather Year Round in Aalborg Denmark

In Aalborg, the summers are comfortable and partly cloudy; the winters are long, very cold, snowy, and mostly cloudy; and it is windy year round. Over the course of the year, the temperature typically varies from 29°F to 70°F and is rarely below 15°F or above 78°F.

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

The warm season lasts for 3.1 months, from June 5 to September 9, with an average daily high temperature above 63°F. The hottest month of the year in Aalborg is July, with an average high of 69°F and low of 55°F.

The cold season lasts for 3.9 months, from November 21 to March 19, with an average daily high temperature below 43°F. The coldest month of the year in Aalborg is January, with an average low of 29°F and high of 37°F.

In Aalborg, 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 Aalborg begins around April 20 and lasts for 5.6 months, ending around October 6.

The clearest month of the year in Aalborg is July, during which on average the sky is clear, mostly clear, or partly cloudy 56% of the time.

The cloudier part of the year begins around October 6 and lasts for 6.4 months, ending around April 20.

The cloudiest month of the year in Aalborg is December, during which on average the sky is overcast or mostly cloudy 66% of the time.

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

The wetter season lasts 7.4 months, from June 18 to January 29, with a greater than 29% chance of a given day being a wet day. The month with the most wet days in Aalborg is November, with an average of 10.3 days with at least 0.04 inches of precipitation.

The drier season lasts 4.6 months, from January 29 to June 18. The month with the fewest wet days in Aalborg is April, with an average of 6.8 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Aalborg is October, with an average of 10.5 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 36% on October 31.

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. Aalborg experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Aalborg. The month with the most rain in Aalborg is October, with an average rainfall of 2.6 inches.

The month with the least rain in Aalborg is February, with an average rainfall of 1.3 inches.

Snowfall

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

The snowy period of the year lasts for 4.1 months, from November 23 to March 27, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Aalborg is January, with an average snowfall of 2.7 inches.

The snowless period of the year lasts for 7.9 months, from March 27 to November 23. The least snow falls around July 27, with an average total accumulation of 0.0 inches.

The length of the day in Aalborg varies extremely over the course of the year. In 2025, the shortest day is December 21, with 6 hours, 42 minutes of daylight; the longest day is June 21, with 17 hours, 54 minutes of daylight.

The earliest sunrise is at 4:24 AM on June 18, and the latest sunrise is 4 hours, 35 minutes later at 8:59 AM on December 28. The earliest sunset is at 3:37 PM on December 15, and the latest sunset is 6 hours, 42 minutes later at 10:19 PM on June 23.

Daylight saving time (DST) is observed in Aalborg during 2025, starting in the spring on March 30, lasting 6.9 months, and ending in the fall on October 26.

The figure below presents a compact representation of key lunar data for 2025. 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.

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 Aalborg, 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.

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

The windier part of the year lasts for 6.3 months, from September 21 to March 30, with average wind speeds of more than 13.5 miles per hour. The windiest month of the year in Aalborg is January, with an average hourly wind speed of 15.5 miles per hour.

The calmer time of year lasts for 5.7 months, from March 30 to September 21. The calmest month of the year in Aalborg is July, with an average hourly wind speed of 11.5 miles per hour.

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

The wind is most often from the south for 1.0 months, from October 26 to November 26, with a peak percentage of 36% on November 9. The wind is most often from the west for 11 months, from November 26 to October 26, with a peak percentage of 38% on January 1.

Aalborg 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 3.0 months, from June 24 to September 22, with an average temperature above 58°F. The month of the year in Aalborg with the warmest water is August, with an average temperature of 62°F.

The time of year with cooler water lasts for 4.1 months, from December 15 to April 18, with an average temperature below 43°F. The month of the year in Aalborg with the coolest water is February, with an average temperature of 39°F.

To characterize how pleasant the weather is in Aalborg 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 Aalborg for general outdoor tourist activities is from late June to late August, with a peak score in the last 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 Aalborg for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.

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.

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 Aalborg typically lasts for 6.1 months (186 days), from around April 21 to around October 24, rarely starting before March 30 or after May 9, and rarely ending before October 3 or after November 16.

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 Aalborg should appear around May 16, only rarely appearing before May 3 or after May 31.

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 3.2 months, from May 5 to August 11, with an average daily incident shortwave energy per square meter above 5.2 kWh. The brightest month of the year in Aalborg is June, with an average of 6.4 kWh.

The darker period of the year lasts for 4.2 months, from October 18 to February 25, with an average daily incident shortwave energy per square meter below 1.5 kWh. The darkest month of the year in Aalborg is December, with an average of 0.3 kWh.

For the purposes of this report, the geographical coordinates of Aalborg are 57.048 deg latitude, 9.919 deg longitude, and 33 ft elevation.

The topography within 2 miles of Aalborg contains only modest variations in elevation, with a maximum elevation change of 249 feet and an average elevation above sea level of 47 feet. Within 10 miles also contains only modest variations in elevation (322 feet). Within 50 miles also contains only modest variations in elevation (479 feet).

The area within 2 miles of Aalborg is covered by artificial surfaces (84%) and water (13%), within 10 miles by cropland (68%) and artificial surfaces (13%), and within 50 miles by water (51%) and cropland (37%).