Climate Insights for Lapua

Seinäjoki, South Ostrobothnia, Finland

Hottest
July
21°C peak
Coldest
January
-9°C low
Wettest
August
93mm rain
Best to Visit
July
Mild temps & low rain

Climate Overview

The climate in Lapua is cool. The average annual temperature is 5°C and approximately 695mm of precipitation falls per year. Lapua receives a notable amount of rainfall throughout the year, including during its driest month. Lapua is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, March, when temperatures can drop to -9°C. Snowfall occurs from January to December, with around 185cm accumulating over the season.

Temperature

-10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -4° Average: -6° Min: -9° Feb Max: -2° Average: -5° Min: -8° Mar Max: 2° Average: -2° Min: -6° Apr Max: 8° Average: 3° Min: -1° May Max: 15° Average: 10° Min: 3° Jun Max: 19° Average: 15° Min: 9° Jul Max: 21° Average: 16° Min: 11° Aug Max: 19° Average: 15° Min: 10° Sep Max: 14° Average: 10° Min: 6° Oct Max: 6° Average: 4° Min: 1° Nov Max: 2° Average: 0° Min: -2° Dec Max: 0° Average: -2° Min: -3°
Max
Average
Min

Temperatures in Lapua vary considerably across the year, with a 30°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 21°C with a mean of 16°C. The coldest month is January, when overnight lows fall to -9°C and the daily average is -6°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 40mm Snow: 31mm Feb Precipitation: 44mm Snow: 31mm Mar Precipitation: 39mm Snow: 29mm Apr Precipitation: 51mm Snow: 20mm May Precipitation: 47mm Snow: 2mm Jun Precipitation: 68mm Snow: 0mm Jul Precipitation: 76mm Snow: 0mm Aug Precipitation: 93mm Snow: 0mm Sep Precipitation: 67mm Snow: 0mm Oct Precipitation: 59mm Snow: 8mm Nov Precipitation: 61mm Snow: 26mm Dec Precipitation: 50mm Snow: 37mm
Precipitation
Snow

Lapua is a relatively dry area, receiving approximately 695mm of precipitation annually, which averages out to around 58mm per month. The wettest month is August, averaging 93mm of rainfall. July and June also tend to see above-average precipitation. The driest month is March, with just 39mm. That's 55mm less than August, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 185cm accumulating over the season. December typically sees the most snow at around 37cm.

Wind

0km/h 5km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 3km/h Feb Wind Speed: 3km/h Mar Wind Speed: 3km/h Apr Wind Speed: 3km/h May Wind Speed: 3km/h Jun Wind Speed: 3km/h Jul Wind Speed: 3km/h Aug Wind Speed: 3km/h Sep Wind Speed: 3km/h Oct Wind Speed: 3km/h Nov Wind Speed: 3km/h Dec Wind Speed: 3km/h
Wind Speed

Lapua is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

92 days until Autumn

It is currently summer in Lapua, which began on June 21, 2026. Lapua is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 21°C, while the coldest stretch bottoms out in January near -9°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

Spring

Temperatures range from -6 to 15°C. Rainfall is relatively light, with around 137mm over the season and a monthly average of 46mm. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 9 to 21°C. Precipitation is moderate at around 238mm for the season, averaging 79mm per month. Winds are generally light, averaging 3km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from -2 to 14°C. Precipitation is moderate at around 187mm for the season, averaging 62mm per month. Expect around 34cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from -9 to 0°C. Rainfall is relatively light, with around 134mm over the season and a monthly average of 45mm. Expect around 100cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

Best Time to Visit

Jan -6°
Feb -5°
Mar -2°
Apr
May 10°
Jun 15°
Jul 16°
Aug 15°
Sep 10°
Oct
Nov
Dec -2°

The best time to visit Lapua is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 76mm per month. By contrast, January can be quite cold with temperatures dropping to -9°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Lapua based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-9 °C
-4 °C
3 km/h
40 mm
31 cm
Feb
-8 °C
-2 °C
3 km/h
44 mm
31 cm
Mar
-6 °C
2 °C
3 km/h
39 mm
29 cm
Apr
-1 °C
8 °C
3 km/h
51 mm
20 cm
May
3 °C
15 °C
3 km/h
47 mm
2 cm
Jun Current
9 °C
19 °C
3 km/h
68 mm
0 cm
Jul
11 °C
21 °C
3 km/h
76 mm
0 cm
Aug
10 °C
19 °C
3 km/h
93 mm
0 cm
Sep
6 °C
14 °C
3 km/h
67 mm
0 cm
Oct
1 °C
6 °C
3 km/h
59 mm
8 cm
Nov
-2 °C
2 °C
3 km/h
61 mm
26 cm
Dec
-3 °C
0 °C
3 km/h
50 mm
37 cm
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