Climate and monthly weather forecastNorrtälje, Sweden
Climate and monthly weather forecast
The climate of Norrtälje
The strategic location of Norrtälje, in Sweden's eastern part, lays the foundation for its distinct climate. Classified under the Köppen climate system as a Dfb climate, Norrtälje experiences a Humid Continental variety, characterized by no dry season and a warm summer. Weather conditions here vary considerably throughout the year.Across a standard calendar year, Norrtälje grapples with considerable fluctuations in temperature, from a subdued 0.2°C (32.4°F) in January to a peak summertime temperature of 19.5°C (67.1°F) in July and August. Shivering cold threatens the town in winter months, with temperatures stooping to -2.5°C (27.5°F) in January and February. A noticeable easing of the icy grasp is witnessed by mid-year, with warm temperatures resurrecting joy between June and August.
Rainfall persists throughout the year, devoid of any dry season. The most significant downpour usually occurs from June to August, the wettest month being July, enduring precipitation of 52mm (2.05"). Months of decreased rainfall, such as April which sees 16mm (0.63"), offer a fleeting respite.
Norrtälje's skies exhibit a uniform distribution of sunshine across the year, with July having the most exposure, boasting 12.7 hours of sun daily. On the contrary, November and December receive just over 2 hours of sunlight per day.
One distinctive meteorological event in Norrtälje is its snowfall. Winter months from November to March take on a white blanket, with December and February experiencing the highest snowfall, 56mm (2.2") and 82mm (3.23") respectively.
The best time to visit Norrtälje
Factoring in Norrtälje's weather variation and climate trends, the ideal period for tourism falls between May and August. During this time, the temperatures hover between 12.1°C (53.8°F) to 19.5°C (67.1°F), producing a warm and inviting climate. Independent from the raised temperatures, these months have a commendable amount of sunshine, ranging from 9.8 hours to 12.7 hours per day, thatm intrigues outdoor enthusiasts.The worst time to visit Norrtälje
The least favorable time to plan a trip to Norrtälje would undoubtedly be the bitterly cold months from December to February. Temperatures during this time are from -0.6°C (30.9°F) to 0.3°C (32.5°F), interspersed with substantial snowfall. This could limit outdoor activities and hinder travel arrangements.Spring weather in Norrtälje
During spring between March and May, the town of Norrtälje undergoes a gradual transition from a biting winter to warmer conditions. March commences with a cool average temperature of 2.7°C (36.9°F) that escalates to 12.1°C (53.8°F) by May. It's a time of increased daylight, with sunshine hours extending from 11.8 hours in March to a pleasant 17.1 hours in May.Summer weather in Norrtälje
Summer, extending from June to August, brings the warmest conditions to Norrtälje. The mercury column shows readings from 16.3°C (61.3°F) to 19.5°C (67.1°F) during this period. Enjoy an average of around 18.5 daylight hours, infused with a daily sunbathing opportunity of over 11 hours.Autumn weather in Norrtälje
The beauty of autumn graces Norrtälje from September to November. The fall season witnesses a steady decline in temperatures from 15.2°C (59.4°F) in September to just 2°C (35.6°F) in November. It also ushers in increased rainfall, climbing from 25mm (0.98") in September to 29mm (1.14") by November, making this a beautiful yet soggy time of the year.Winter weather in Norrtälje
Winter in Norrtälje, typically from December to February, is a frozen wonderland. The mercury drops dramatically to create chilly conditions, with temperatures fluctuating from -0.6°C (30.9°F) to 0.3°C (32.5°F). Amid persistent cold, snowfall takes prominence in this period, making Norrtälje a snowy retreat in these months.Weather in January
The year starts in Norrtälje, Sweden with the frosty embrace of winter. January experiences lower temperatures, plunging to -2.5°C (27.5°F) while higher temperatures barely rising above freezing at 0.2°C (32.4°F). This results in a snowfall reaching up to 49mm (1.93") throughout the month. Weather in January »Weather in February
As winter continues, the weather in Norrtälje, Sweden in February presents slightly warmer temperatures than January. Despite this, the city witnesses a noticeable increase in snowfall, peaking at 82mm (3.23") in February. However, the warmer temperatures do little to alleviate the chilling winds, ensuring that winter apparels remain a necessity. Weather in February »Weather in March
Norrtälje, Sweden begins to emerge from the winter by March. Transitional seasonal changes take effect, resulting in warmer temperatures compared to February. The most notable change in the weather is the reduction in snowfall, with the accumulation dipping to 73mm (2.87") in this month. Weather in March »Weather in April
In Norrtälje, Sweden, the onset of spring brings a transformative change to the weather conditions in April. The month experiences increased daylight hours, which hits a new high this year at 14.6 hours. The city witnesses a significant drop in snowfall, down to 23mm (0.91") from the figures of the preceding month. Weather in April »Weather in May
The weather in Norrtälje, Sweden in May showcases an entirely different face of the city. The temperatures rise significantly as the strong grip of winter finally relaxes, paving the way for the charms of the spring season. A drastic change is noticed in terms of snowfall, as Norrtälje records 9mm (0.35") of snowfall in May, signifying the withdrawal of winter. Weather in May »Weather in June
The first month of summer in Norrtälje, Sweden, brings with it not just a rise in temperatures, but also increased humidity levels. It is noted that rainfall reaches a significantly high measurement of 34mm (1.34") in June. The warmth and rain result in plush green landscapes, making it an ideal time for outdoor activities. Weather in June »Weather in July
Norrtälje, Sweden ushers in the month of July with temperatures hovering in the warmer zone. Observations reveal a rainfall height of 52mm (2.05"), making it the wettest month of the year. Despite the rainfall, the city continues to experience longer daylight hours, ensuring ample opportunities for outdoor excursions. Weather in July »Weather in August
As the second half of the year begins, Norrtälje, Sweden in August retains the pleasant summer weather. A unique characteristic of August is that despite the rainfall being lower than in July, the temperatures remain around the same. Weather in August »Weather in September
The arrival of autumn in Norrtälje, Sweden starts to become apparent in September. There is a dip in temperatures and daylight hours, indicating the end of the warm summer. While rain continues to drizzle down with a measure of 25mm (0.98"), the weather begins to cool down. Weather in September »Weather in October
October in Norrtälje, Sweden sees a more noticeable shift towards the colder months. These changes introduce a noticeable drop in temperatures. Yet, the city gets cloaked in a warm palette of yellow, orange, and red leaves, indicating the height of the fall season. Weather in October »Weather in November
As winter draws closer, November in Norrtälje, Sweden experiences cooler and shorter days. A light dusting of snow begins to appear with the snowfall accumulation reaching 16mm (0.63") across the month. This is a significant difference compared to the previous month and is a key characteristic of November’s weather. Weather in November »Weather in December
Norrtälje, Sweden closes the year with December, and the full onset of winter takes over the city. Temperatures continue to plummet, accompanied by an increased snowfall, which peaks at 56mm (2.2") for the month. It brings thick blankets of snow, covering the city in a serene white layer. Weather in December »Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Norrtälje experiences its lowest temperatures in January, with an average peak of 0.2°C (32.4°F) and a low of -2.5°C (27.5°F).
Throughout the year, there are 140.1 rainfall days, and 354mm (13.94") of precipitation is accumulated.
January through May, October through December are months with snowfall in Norrtälje.
Throughout the year, there are 47.1 snowfall days, and 311mm (12.24") of snow is accumulated.
January and February, with an average maximum UV index of 1, are months with the lowest UV index in Norrtälje.
February and November, with an average relative humidity of 86%, are most humid months.
February is the month with the most snowfall. Snow falls for 10.4 days and accumulates 82mm (3.23") of snow.
The months with the lowest humidity are April through June, with an average relative humidity of 75%.
The month with the least rainfall is April, when the rain falls for 10.8 days and typically collects 16mm (0.63") of precipitation.
In Norrtälje, snow does not fall in June through September.
The month with the longest days in Norrtälje is June, with an average of 18h and 36min of daylight.
The month with the most sunshine is June, with an average of 12.7h of sunshine.
Norrtälje witnesses its peak temperatures during July and August, when the average high-temperature reaches 19.5°C (67.1°F).
July is the month with the most rainfall in Norrtälje, Sweden. Rain falls for 15.3 days and accumulates 52mm (2.05") of precipitation.
July is the month with the highest UV index in Norrtälje, Sweden, with an average maximum UV index of 5.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Norrtälje, 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.
With an average of 6h and 6min of daylight, December has the shortest days of the year in Norrtälje.
December has the least sunshine of the year in Norrtälje, with an average of 2.4h of sunshine.
Average temperature
Norrtälje, Sweden
The warmest months (with the highest average high temperature) are July and August (19.5°C).
The month with the lowest average high temperature is January (0.2°C).
The months with the highest average low temperature are July and August (14.1°C).
The coldest months (with the lowest average low temperature) are January and February (-2.5°C).
Average pressure
Norrtälje, Sweden
- Average pressure in January:
1010.9mbar - Average pressure in February:
1011.3mbar - Average pressure in March:
1011.6mbar - Average pressure in April:
1014.1mbar - Average pressure in May:
1014.9mbar - Average pressure in June:
1012.5mbar
- Average pressure in July:
1011.1mbar - Average pressure in August:
1012.6mbar - Average pressure in September:
1013.2mbar - Average pressure in October:
1013.8mbar - Average pressure in November:
1010.8mbar - Average pressure in December:
1007.5mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.5mbar).
Average wind speed
Norrtälje, Sweden
- Average wind speed in January:
21km/h - Average wind speed in February:
19.1km/h - Average wind speed in March:
18.1km/h - Average wind speed in April:
16.5km/h - Average wind speed in May:
15.5km/h - Average wind speed in June:
14.8km/h
- Average wind speed in July:
14.3km/h - Average wind speed in August:
14.9km/h - Average wind speed in September:
17.1km/h - Average wind speed in October:
19km/h - Average wind speed in November:
19.9km/h - Average wind speed in December:
21.8km/h
The windiest month (with the highest average wind speed) is December (21.8km/h).
The calmest month (with the lowest average wind speed) is July (14.3km/h).
Average humidity
Norrtälje, Sweden
The months with the highest relative humidity are February and November (86%).
The months with the lowest relative humidity are April, May and June (75%).
Average rainfall
Norrtälje, Sweden
The wettest month (with the highest rainfall) is July (52mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days
Norrtälje, Sweden
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
9.2 days - Average rainfall days in April:
10.8 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
13.6 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
16.2 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
12.5 days - Average rainfall days in December:
10 days
The month with the highest number of rainy days is August (16.2 days).
The month with the least rainy days is February (5.8 days).
Average snowfall
Norrtälje, Sweden
The month with the highest snowfall is February (82mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Norrtälje, Sweden
- Average snowfall days in January:
11.3 days - Average snowfall days in February:
10.4 days - Average snowfall days in March:
9.3 days - Average snowfall days in April:
2.8 days - Average snowfall days in May:
0.8 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.7 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
9.7 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Norrtälje, Sweden
- Average daylight in January:
6h and 54min - Average daylight in February:
9h and 12min - Average daylight in March:
11h and 48min - Average daylight in April:
14h and 36min - Average daylight in May:
17h and 6min - Average daylight in June:
18h and 36min
- Average daylight in July:
17h and 54min - Average daylight in August:
15h and 30min - Average daylight in September:
12h and 54min - Average daylight in October:
10h and 6min - Average daylight in November:
7h and 36min - Average daylight in December:
6h and 6min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in January:
3h and 12min - Average sunshine in February:
3h and 30min - Average sunshine in March:
5h and 12min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 48min - Average sunshine in June:
12h and 42min
- Average sunshine in July:
11h and 30min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 18min - Average sunshine in October:
4h and 36min - Average sunshine in November:
3h and 18min - Average sunshine in December:
2h and 24min
The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days
Norrtälje, Sweden
- Average sunshine days in January:
13 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
12.5 days - Average sunshine days in April:
14.4 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
13.2 days - Average sunshine days in October:
12.9 days - Average sunshine days in November:
13.5 days - Average sunshine days in December:
12.1 days
The month with the most sunshine days is May (14.5 days).
The month with the least sunshine days is August (11.3 days).
Average UV index
Norrtälje, Sweden
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover
Norrtälje, Sweden
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility
Norrtälje, Sweden
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).
