Climate and Average Weather Year Round at Kalkar Germany

At Kalkar, the summers are comfortable and partly cloudy and the winters are long, very cold, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 32°F to 75°F and is rarely below 20°F or above 87°F.

Based on the tourism score, the best time of year to visit Kalkar for warm-weather activities is from mid June to early September.

The warm season lasts for 3.2 months, from June 1 to September 9, with an average daily high temperature above 69°F. The hottest month of the year at Kalkar is July, with an average high of 74°F and low of 56°F.

The cool season lasts for 3.7 months, from November 17 to March 8, with an average daily high temperature below 48°F. The coldest month of the year at Kalkar is January, with an average low of 33°F and high of 42°F.

At Kalkar, 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 Kalkar begins around March 25 and lasts for 6.5 months, ending around October 11.

The clearest month of the year at Kalkar is July, during which on average the sky is clear, mostly clear, or partly cloudy 55% of the time.

The cloudier part of the year begins around October 11 and lasts for 5.5 months, ending around March 25.

The cloudiest month of the year at Kalkar is December, during which on average the sky is overcast or mostly cloudy 72% 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 at Kalkar varies throughout the year.

The wetter season lasts 8.5 months, from May 18 to February 4, with a greater than 29% chance of a given day being a wet day. The month with the most wet days at Kalkar is December, with an average of 10.3 days with at least 0.04 inches of precipitation.

The drier season lasts 3.4 months, from February 4 to May 18. The month with the fewest wet days at Kalkar is April, with an average of 7.2 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 at Kalkar is June, with an average of 9.4 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 33% on June 17.

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. Kalkar experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Kalkar. The month with the most rain at Kalkar is December, with an average rainfall of 2.2 inches.

The month with the least rain at Kalkar is April, with an average rainfall of 1.3 inches.

The length of the day at Kalkar varies extremely over the course of the year. In 2024, the shortest day is December 21, with 7 hours, 47 minutes of daylight; the longest day is June 20, with 16 hours, 41 minutes of daylight.

The earliest sunrise is at 5:15 AM on June 16, and the latest sunrise is 3 hours, 26 minutes later at 8:41 AM on December 30. The earliest sunset is at 4:24 PM on December 12, and the latest sunset is 5 hours, 33 minutes later at 9:57 PM on June 24.

Daylight saving time (DST) is observed at Kalkar during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

The figure below presents a compact representation of key lunar data for 2024. 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 at Kalkar, 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 at Kalkar experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.6 months, from October 16 to April 4, with average wind speeds of more than 10.4 miles per hour. The windiest month of the year at Kalkar is January, with an average hourly wind speed of 12.4 miles per hour.

The calmer time of year lasts for 6.4 months, from April 4 to October 16. The calmest month of the year at Kalkar is August, with an average hourly wind speed of 8.6 miles per hour.

The predominant average hourly wind direction at Kalkar varies throughout the year.

The wind is most often from the west for 8.4 months, from January 18 to September 29 and for 4.0 days, from December 19 to December 23, with a peak percentage of 46% on July 2. The wind is most often from the south for 2.7 months, from September 29 to December 19 and for 3.7 weeks, from December 23 to January 18, with a peak percentage of 42% on October 30.

Kalkar 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 3.1 months, from June 26 to September 29, with an average temperature above 60°F. The month of the year at Kalkar with the warmest water is August, with an average temperature of 65°F.

The time of year with cooler water lasts for 3.8 months, from December 16 to April 8, with an average temperature below 46°F. The month of the year at Kalkar with the coolest water is February, with an average temperature of 41°F.

To characterize how pleasant the weather is at Kalkar 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 Kalkar for general outdoor tourist activities is from mid June to early September, with a peak score in the first week of August.

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 Kalkar for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.

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 at Kalkar typically lasts for 7.0 months (213 days), from around April 10 to around November 9, rarely starting before March 15 or after April 30, and rarely ending before October 14 or after December 9.

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 Kalkar should appear around April 18, only rarely appearing before April 5 or after May 1.

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 3.7 months, from April 27 to August 17, with an average daily incident shortwave energy per square meter above 5.1 kWh. The brightest month of the year at Kalkar is June, with an average of 6.2 kWh.

The darker period of the year lasts for 3.8 months, from October 25 to February 19, with an average daily incident shortwave energy per square meter below 1.7 kWh. The darkest month of the year at Kalkar is December, with an average of 0.6 kWh.

For the purposes of this report, the geographical coordinates of Kalkar are 51.733 deg latitude, 6.267 deg longitude, and 95 ft elevation.

The topography within 2 miles of Kalkar contains only modest variations in elevation, with a maximum elevation change of 197 feet and an average elevation above sea level of 91 feet. Within 10 miles also contains only modest variations in elevation (348 feet). Within 50 miles contains only modest variations in elevation (1,250 feet).

The area within 2 miles of Kalkar is covered by cropland (73%) and grassland (15%), within 10 miles by cropland (53%) and grassland (24%), and within 50 miles by cropland (45%) and grassland (18%).