May weather forecast and climate
Lahti, Finland

Weather in May

May, the last month of the spring, in Lahti, is a mild month, with average temperature ranging between max 15.5°C (59.9°F) and min 5.9°C (42.6°F).

Temperature

In Lahti, the average high-temperature soars, from a chilly 7.2°C (45°F) in April, to a mild 15.5°C (59.9°F). In May, in Lahti, Finland, the average low-temperature is 5.9°C (42.6°F).

Humidity

May is the least humid month in Lahti, with an average relative humidity of 67%.

Rainfall

In Lahti, during May, the rain falls for 11.7 days and regularly aggregates up to 36mm (1.42") of precipitation. In Lahti, during the entire year, the rain falls for 118.7 days and collects up to 398mm (15.67") of precipitation.

Snowfall

Months with snowfall in Lahti are January through May, September through December. May is the last month it regularly snows. During 1 snowfall days, in May, Lahti aggregates 37mm (1.46") of snow. In Lahti, during the entire year, snow falls for 93.7 days, and aggregates up to 918mm (36.14") of snow.

Daylight

The average length of the day in Lahti, Finland, is 17.5h.

Sunshine

In May, the average sunshine is 9.3h.

UV index

The average daily maximum UV index in Lahti is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: In May, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the least humid month in Lahti?

With an average relative humidity of 67%, May is the least humid month.

What is the average humidity in May in Lahti?

The average relative humidity in May in Lahti is 67%.

How much does it rain in Lahti in May?

In May, the rain falls for 11.7 days. Throughout May, 36mm (1.42") of precipitation is accumulated.

What is the last month it snows in Lahti?

May is the last month it regularly snows in Lahti, Finland. During 1 snowfall days, in May, Lahti aggregates 37mm (1.46") of snow.

What is the average length of the day in May in Lahti?

In Lahti, the average length of the day in May is 17.5h.

How long on average sun shines in May in Lahti?

In Lahti, Finland, the average sunshine in May is 9.3h.

What is the UV index reading in May in Lahti?

In May, the average daily maximum UV index in Lahti is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in May
Lahti, Finland

Average temperature in May - Lahti, Finland
  • Average high temperature in May: 15.5°C

The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (-4.5°C).

  • Average low temperature in May: 5.9°C

The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is January (-8.9°C).

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Average pressure in May
Lahti, Finland

Average pressure in May - Lahti, Finland
  • Average pressure in May: 1014.8mbar

The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.4mbar).

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Average wind speed in May
Lahti, Finland

Average wind speed in May - Lahti, Finland
  • Average wind speed in May: 10.5km/h

The windiest month (with the highest average wind speed) is December (12km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).

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Average humidity in May
Lahti, Finland

Average humidity in May - Lahti, Finland
  • Average humidity in May: 67%

The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (67%).

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Average rainfall in May
Lahti, Finland

Average rainfall in May - Lahti, Finland
  • Average rainfall in May: 36mm

The wettest month (with the highest rainfall) is July (46mm).
The driest month (with the least rainfall) is April (24mm).

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Average rainfall days in May
Lahti, Finland

Average rainfall days in May - Lahti, Finland
  • Average rainfall days in May: 11.7 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (3.7 days).

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Average snowfall in May
Lahti, Finland

Average snowfall in May - Lahti, Finland
  • Average snowfall in May: 37mm

The month with the highest snowfall is January (196mm).
Months with the least snowfall are June, July and August (0mm).

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Average snowfall days in May
Lahti, Finland

Average snowfall days in May - Lahti, Finland
  • Average snowfall days in May: 1 days

Months with the highest number of snowfall days are January and December (18.9 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in May /
Average sunshine in May
Lahti, Finland

Average daylight in May / Average sunshine in May - Lahti, Finland
  • Average daylight in May: 17.5h

The month with the longest days is June (Average daylight: 19.1h).
The month with the shortest days is December (Average daylight: 5.7h).

  • Average sunshine in May: 9.3h

The month with the most sunshine is June (Average sunshine: 11.6h).
The month with the least sunshine is December (Average sunshine: 1.4h).

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Average sunshine days in May
Lahti, Finland

Average sunshine days in May - Lahti, Finland
  • Average sunshine days in May: 17.6 days

Months with the most sunshine days are May and August (17.6 days).
The month with the least sunshine days is December (8.4 days).

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Average UV index in May
Lahti, Finland

Average UV index in May - Lahti, Finland
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 1).

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Average cloud cover in May
Lahti, Finland

Average cloud cover in May - Lahti, Finland
  • Average cloud cover in May: 46

Months with the most cloud cover are January and February (Cloud cover 81).
The month with the least cloud cover is August (Cloud cover 44).

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Average visibility in May
Lahti, Finland

Average visibility in May - Lahti, Finland
  • Average visibility in May: 9km

Months with the highest visibility are May, June, July and August (9km).
Months with the lowest visibility are January and February (5km).

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