Average weather, temperature, rainfall, sunshine hours
The climate of Haparanda is cold continental, with freezing winters and mild summers.
The city is located in northern Sweden, in the province of Norrbotten, in the northernmost part of the Gulf of Bothnia (called Bottenviken), which in winter can freeze. Beyond the border with Finland is the twin town of Tornio. It is true that we are at the 65th parallel, therefore just south of the Arctic Circle, but due to atmospheric refraction, one can observe the midnight sun from 19 to 25 June. Moreover, the white nights, when the sun sets but it is not completely dark even at midnight, occur from April 23rd to August 20th.
The
average temperature of the coldest month (January) is of -9.9 °C (14 °F), that of the warmest month (July) is of 16.6 °C (62 °F). The lowest record is -41.7 °C (29.4 °F), the highest is 33.6 °C (92 °F). Here are the average temperatures.
Haparanda - Average temperatures| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Min (°C) | -14 | -13 | -10 | -3 | 3 | 8 | 12 | 10 | 6 | -1 | -5 | -10 |
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| Max (°C) | -6 | -5 | 0 | 5 | 12 | 18 | 21 | 19 | 13 | 6 | 0 | -3 |
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| Min (°F) | 7 | 9 | 14 | 27 | 37 | 46 | 54 | 50 | 43 | 30 | 23 | 14 |
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| Max (°F) | 21 | 23 | 32 | 41 | 54 | 64 | 70 | 66 | 55 | 43 | 32 | 27 |
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amounts to 625 millimeters (24.6 inches) per year: so, it is at an intermediate level. It ranges from 35 mm (1.4 in) in the driest months (March, April) to 65 mm (2.6 in) in the wettest ones (September, November). Here is the average precipitation.
Haparanda - Average precipitation| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
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| Prec.(mm) | 55 | 40 | 35 | 35 | 45 | 50 | 60 | 55 | 65 | 55 | 65 | 60 | 625 |
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| Prec.(in) | 2.2 | 1.6 | 1.4 | 1.4 | 1.8 | 2 | 2.4 | 2.2 | 2.6 | 2.2 | 2.6 | 2.4 | 24.6 |
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| Days | | | | | | | | | | | | | |
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The
sea temperature ranges between -1 °C (30 °F) and 15 °C (59 °F). So, it is cold all year round. It is useful to recall that the sea water freezes at about -2 °C (28.5 °F). Here are the average sea temperatures.
Haparanda - Sea temperature| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Temp (°C) | 1 | 0 | -1 | 0 | 3 | 8 | 13 | 15 | 12 | 8 | 5 | 2 |
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| Temp (°F) | 34 | 32 | 30 | 32 | 37 | 46 | 55 | 59 | 54 | 46 | 41 | 36 |
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Best Time
The best time to visit Haparanda is the summer, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.