Climate and monthly weather forecast
Kalmar, Sweden

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The climate of Kalmar

Classified under the Köppen climate classification as Cfb, Kalmar, a city on Sweden's southeastern coast, experiences Oceanic climate, exhibiting warm summers and mild winters. The weather pattern showcases substantial changes reflecting the changing seasons, with the highest temperatures, humidity levels, and precipitation seen in summer, transitioning into cooler climate towards the end of the year.

Analysis of monthly weather data signals an average high temperature fluctuating between 1.6°C (34.9°F) in January to a peak of 21°C (69.8°F) in July before slowly receding to 3.3°C (37.9°F) by December. Concurrently, the average low temperature varies across the year from a chilling -1.3°C (29.7°F) in January and February to a comfortable 14.1°C (57.4°F) in July, then dropping back to 0.5°C (32.9°F) as winter turns the year-end calendar. Tracking temperature changes indicates that both the highest and lowest temperature averages in July, underscoring summer as the warmest season.

A glance at rainfall and snowfall data reveals that the highest average precipitation of 36mm (1.42") occurs in the seventh month, accompanied by 13.6 rainy days. Conversely, October to December records a steady increase in rainfall, peaking at 35mm (1.38") in November. On the other hand, snowfall seems prevalent from October to April, with the highest average snowfall of 84mm (3.31") and maximum snowfall days of 12.3 in February. Interestingly, Kalmar receives no snowfall from May to September, signifying a clear demarcation in the annual climate schedule.

The best time to visit Kalmar

Lighting conditions and temperatures converge on making the period between May and September the ideal lot for visitors. With an average daylight span extending from 16.5 hours in May to 17.7 hours in June and July, it presents maximum hours under the sun. Additionally, the warmth of the summer season arrives with temperatures veering from 14.4°C (57.9°F) in May to the annual high of 21°C (69.8°F) in July. One should note, the period also enjoys the least occurrence of snowfall, smoothening travel plans.

The worst time to visit Kalmar

The season to avoid would arguably be winter i.e., December to February, when mercury levels drop, the city receives an average high of 1.6°C (34.9°F), and the low plunges to the annual low of -1.3°C (29.7°F). Visitors should also take note of the reduced daylight hours, plummeting to 6.9 hours in December. Besides, the increased snowfall average of 70mm (2.76") in December escalating to 84mm (3.31") in February might present a travel challenge, despite its aesthetic appeal.

Spring weather in Kalmar

Spring begins in March with temperatures rising to 4.9°C (40.8°F), reaching up to 9.8°C (49.6°F) in April and finally welcoming summer with an invigorating 14.4°C (57.9°F) in May. Precipitation also remains lower than seasonal averages with 17mm (0.67") in March decreasing to 10mm (0.39") in April before rising to 22mm (0.87") in May. Thus, the spring season brings a pleasant respite from the biting cold of the winters.

Summer weather in Kalmar

Summer in Kalmar prevails from June to August with environmental changes in full swing. The average high temperature rises from 18.5°C (65.3°F) in June, peaking at 21°C (69.8°F) in July, and then gently declining to 20.8°C (69.4°F) in August. Simultaneously, the sea temperature spikes from an average of 14.2°C (57.6°F) in June up to 18.3°C (64.9°F) in August. Despite the increased precipitation levels during summer with rainfall ranging from 33mm (1.3") to 36mm (1.42"), the longer daylight hours ensure plenty of time for outdoor activities.

Autumn weather in Kalmar

Autumn witnesses a calm transition from warm to cold weather. September brings a mellow average high temperature of 16.7°C (62.1°F), proceeding to 11.2°C (52.2°F) in October and 6.9°C (44.4°F) by November. While rainfall levels fluctuate in this period from 18mm (0.71") in September to 35mm (1.38") in November, the steadily decreasing daylight hours from 12.8 hours in September to 8.2 hours in November signals the approach of winter.

Winter weather in Kalmar

Winter stretches across December through February. The temperature plummet starts as early as December with -1.3°C (29.7°F), continuing to January, and slightly elevates to 0.5°C (32.9°F) in February. Kalmar experiences the maximum degree of snowfall during this tenure, with the highest in February. The shortest daylight hours, combined with maximum cloud cover at 67%, professionals recommend caution while planning travels to Kalmar during winter.

Weather in January

Kalmar, Sweden begins the year with a chilling atmosphere as winter deepens. It takes precedence over rainfall, with 70mm (2.76") of snow coverage that engulfs the city on approximately 12.3 days, most significant of the season. Weather in January »

Weather in February

February's climate in Kalmar remains in the grip of winter, with snowfall persisting, yet less severe than January. The city experiences the highest snowfall for the year at 84mm (3.31"), on almost 11.8 days. While the sun starts making a more prominent appearance than in January, it is still quite sullen. Weather in February »

Weather in March

With the onset of March, Kalmar witnesses a gradual transition from winter to the cusp of spring. The snowfall lessens and the days become longer, promoting marginally warmer temperatures. However, rainfall increases, clocking up to 17mm (0.67") over about 10.5 days. Weather in March »

Weather in April

April sees a remarkable shift in Kalmar's weather, indicating the established onset of spring. A significant reduction in snowfall, coupled with a palpable rise in daylight amounts, according to the city's climatological data, April offers a high temperature that approaches approximately 9.8°C (49.6°F). Weather in April »

Weather in May

As summer nudges in, May brings a substantial improvement in weather conditions in Kalmar. Long, bright days dominate, transforming the city with an upbeat summer vibe. The mercury in the thermometer rises, indicating warm weather gesturing towards summer. Weather in May »

Weather in June

June exudes a summery charm upon the city of Kalmar. Daylight peaks at 17.7 hours, providing plenty of time for sightseeing and making the most of the pleasant temperature. However, the weather does not entirely succumb to the parched summer norms, with rainfall observing its highest influx in the yea,r clocking up to about 33mm (1.3") over 11.3 days. Weather in June »

Weather in July

July, the warmest month in Kalmar, basks in a full-blown summer ambiance. The temperature reaches its annual peak, at approximately 21°C (69.8°F), making the weather moderately hot. The long, hot days are perfect for beach activities, while the cool nights gift a respite from the daytime's heat. Weather in July »

Weather in August

As August steps in, Kalmar still experiences a significant extension of summer. Although the daytime temperature slightly draws back from July's peak, the weather remains predominantly balmy. The sea water remains warm enough for swimming, bettering July with a reported temperature around 18.3°C (64.9°F). Weather in August »

Weather in September

September denotes the approach of autumn in Kalmar, marked by subtle weather changes. The onset of autumn makes its presence known with cooler temperatures and slowly diminishing daylight hours. Yet, September reminisces the summer warmth during the day, contrary to the creeping crispiness during the evening. Weather in September »

Weather in October

As October rolls in, Kalmar fully embraces the autumn season. Characteristic of fall, the city covers itself in a palette of warm hues, with leaves transforming into breathtaking shades of orange and gold. However, an uptick in rainfall, nearly up to 29mm (1.14") in approximately 11.4 days, hints at the upcoming winter season. Weather in October »

Weather in November

November marks the advent of winter in Kalmar, possessing a stark contrast to the preceding colorful fall foliage. The nip in the air emphasizes, preparation for the approaching snowy season. A marked drop in daytime temperature to around 3.9°C (39°F) suggests the impending freezing conditions of winter. Weather in November »

Weather in December

December plunges Kalmar into total winter mode, with a stark drop in temperatures and an influx of snowfall. A substantial snowfall of 49mm (1.93") dusts the city white over nearly 7.7 days, creating picturesque winter scenes. Weather in December »

Frequently asked questions

What part of the year is the coldest in Kalmar?

The coldest period is January, when temperatures fluctuate between an average high of 1.6°C (34.9°F) and a low of -1.3°C (29.7°F).

What is the most humid month in Kalmar?

The months with the highest humidity are January, February, November and December, with an average relative humidity of 86%.

How many days does it rain in Kalmar?

In Kalmar, Sweden, during the entire year, the rain falls for 127.2 days and collects up to 299mm (11.77") of precipitation.

When does it snow in Kalmar?

January through May, October through December are months with snowfall in Kalmar.

How many days does it snow in Kalmar?

In Kalmar, during the entire year, snow falls for 40.5 days and aggregates up to 250mm (9.84") of snow.

When is the lowest UV index in Kalmar?

With an average maximum UV index of 1, January is the month with the lowest UV index.

What is the snowiest month in Kalmar?

The month with the most snowfall in Kalmar is February, when snow falls for 11.8 days and typically aggregates up to 84mm (3.31") of snow.

What is the month with the least sunshine in Kalmar?

With an average of 3.2h of sunshine, February has the least sunshine of the year.

What month is the sea coldest in Kalmar?

The month with the coldest seawater is March, with an average sea temperature of 1.9°C (35.4°F).

What are the least humid months in Kalmar?

April and May, with an average relative humidity of 71%, are the least humid months.

What is the driest month in Kalmar?

April is the month with the least rainfall. Rain falls for 8.1 days and accumulates 10mm (0.39") of precipitation.

When it does not snow in Kalmar?

In Kalmar, Sweden, snow does not fall in June through September.

When are the longest days in Kalmar?

With an average of 17h and 42min of daylight, June has the longest days of the year in Kalmar.

When is the highest UV index in Kalmar?

June and July, with an average maximum UV index of 5, are months with the highest UV index in Kalmar.

What month is the hottest in Kalmar?

Temperature readings reach their annual highs in July, averaging 21°C (69.8°F) and a minimum average of 14.1°C (57.4°F).

What is the rainiest month in Kalmar?

The month with the most rainfall is July, when the rain falls for 13.6 days and typically aggregates up to 36mm (1.42") of precipitation.

What is the month with the warmest sea water in Kalmar?

With an average sea temperature of 18.3°C (64.9°F), August is the month with the warmest seawater in Kalmar, Sweden.

What month has the most sunshine in Kalmar?

The month with the most sunshine in Kalmar is August, with an average of 10.4h of sunshine.

When is Daylight Saving Time (DST) in Kalmar?

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.

What is the month with the shortest days in Kalmar?

With an average of 6h and 54min of daylight, December has the shortest days of the year in Kalmar, Sweden.

Average temperature
Kalmar, Sweden

Average temperature - Kalmar, Sweden

The warmest month (with the highest average high temperature) is July (21°C).
The month with the lowest average high temperature is January (1.6°C).

The month with the highest average low temperature is July (14.1°C).
The coldest months (with the lowest average low temperature) are January and February (-1.3°C).

Average pressure
Kalmar, Sweden

Average pressure - Kalmar, Sweden

The months with the highest atmospheric pressure are April and May (1015.4mbar).
The month with the lowest atmospheric pressure is December (1010.2mbar).

Average wind speed
Kalmar, Sweden

Average wind speed - Kalmar, Sweden

The windiest month (with the highest average wind speed) is December (18.8km/h).
The calmest month (with the lowest average wind speed) is May (14.1km/h).

Average humidity
Kalmar, Sweden

Average humidity - Kalmar, Sweden

The months with the highest relative humidity are January, February, November and December (86%).
The months with the lowest relative humidity are April and May (71%).

Average rainfall
Kalmar, Sweden

Average rainfall - Kalmar, Sweden

The wettest month (with the highest rainfall) is July (36mm).
The driest month (with the least rainfall) is April (10mm).

Average rainfall days
Kalmar, Sweden

Average rainfall days - Kalmar, Sweden

The month with the highest number of rainy days is July (13.6 days).
The month with the least rainy days is February (6.9 days).

Average snowfall
Kalmar, Sweden

Average snowfall - Kalmar, Sweden

The month with the highest snowfall is February (84mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days
Kalmar, Sweden

Average snowfall days - Kalmar, Sweden

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature
Kalmar, Sweden

Average sea temperature - Kalmar, Sweden

The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest month (with the lowest average sea temperature) is March (1.9°C).

Average daylight / Average sunshine
Kalmar, Sweden

Average daylight / Average sunshine - Kalmar, Sweden

The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).

Average sunshine days
Kalmar, Sweden

Average sunshine days - Kalmar, Sweden

The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is February (11.1 days).

Average visibility
Kalmar, Sweden

Average visibility - Kalmar, Sweden

The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).

Kalmar, Sweden

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