How many sunny days does Porvoo have per year?

Porvoo averages approximately 133 sunny days per year, based on historical climate data.

What is the air quality in Porvoo?

Porvoo has an annual PM2.5 concentration of 5.5 µg/m³, classified as "Good" by WHO standards. Within WHO interim target 4. Low health risk for most people.

Uusimaa

Porvoo · Finland

Name: Porvoo, Finland
Address: Porvoo, FI

A city in Finland.

Small city

51K

29m

07:04 UTC+2

EUR

Explore on map →Climate twin →

Porvoo, Finland is a 51K-resident city with 133 sunny days and 137 frost days annually and an annual PM2.5 of 5.5 µg/m³. A city in Finland.

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Climate

Feels-like °C

-13

-11

-6

-12

Dinner outside

Climate Lab·Porvoo

Monthly climate metrics across temperature, precipitation, wind, and UV.

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Metric	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Temperature
Daily high°C	2	2	5	12	19	26	24	23	17	12	7	2	13
Daily mean°C	-3	-1	1	5	12	19	19	19	14	9	2	-3	8
Daily low°C	-10	-8	-5	0	5	14	15	14	9	3	-3	-9	2
Thermal comfort
High feelsDaily high feels-like°C	-6	-3	5	13	21	29	27	26	18	8	1	-5	11
Mean feelsDaily mean feels-like°C	-13	-11	-6	2	11	22	20	19	11	2	-6	-12	3
Low feelsDaily low feels-like°C	-23	-20	-16	-11	1	12	14	12	1	-6	-16	-20	-6
Humidity
HumidityRelative humidity%	91	88	81	61	48	54	66	72	83	86	90	92	76
Dewpoint°C	-4.3	-4.0	-1.5	-1.6	1.8	10.2	12.0	13.6	10.5	6.1	0.8	-4.1	3.3
Precipitation
Rainfallmm	15	30	25	32	46	42	91	80	47	70	36	20	535
Rain days≥1mm	3	6	7	8	11	11	17	14	10	13	9	4	113
Snowfallmm	67	35	16	16	0	0	0	0	0	0	20	48	201
Snow days≥1mm	13	7	4	3	0	0	0	0	0	0	6	11	44
Wind
Wind avgm/s	4.2	3.8	3.8	3.4	3.3	2.9	3.2	3.2	3.6	3.7	3.7	3.8	3.5
Wind gustsm/s	6.8	7.1	6.2	6.3	5.4	5.4	5.5	5.9	6.1	6.6	6.2	6.1	6.1
Sun & UV
Sunshinehrs/day	0.0	2.7	6.8	10.0	12.6	14.1	12.2	10.8	7.3	3.0	0.0	0.0	6.6
Clear skyindex	6%	22%	32%	42%	45%	58%	39%	40%	27%	22%	9%	3%	29%
UV indexmax avg	0.1	0.4	1.0	2.3	3.5	4.5	3.8	3.2	1.9	0.7	0.2	0.1	1.8

Based on 2014–2024 hourly climate data · Updated Mar 2025

Confidence: High

Lifestyle Calendar·Porvoo

Porvoo offers a solid outdoor season. June through August are perfect for all activities. Even dinner outside manages 3/12 months, while walking is comfortable 12/12 months — impressive.

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Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

3/12

Dinner Outside

0Jan: 0% viability

0Feb: 0% viability

0Mar: 0% viability

14Apr: 14% viability

51May: 51% viability

87Jun: 87% viability

83Jul: 83% viability

79Aug: 79% viability

40Sep: 40% viability

1Oct: 1% viability

0Nov: 0% viability

0Dec: 0% viability

3/12

Dinner Outside

0Jan: 0% viability

0Feb: 0% viability

0Mar: 0% viability

14Apr: 14% viability

51May: 51% viability

87Jun: 87% viability

83Jul: 83% viability

79Aug: 79% viability

40Sep: 40% viability

1Oct: 1% viability

0Nov: 0% viability

0Dec: 0% viability

30%

Cold

5/12

Lunch Outside

0Jan: 0% viability

3Feb: 3% viability

27Mar: 27% viability

52Apr: 52% viability

76May: 76% viability

83Jun: 83% viability

72Jul: 72% viability

75Aug: 75% viability

76Sep: 76% viability

37Oct: 37% viability

4Nov: 4% viability

0Dec: 0% viability

5/12

Lunch Outside

0Jan: 0% viability

3Feb: 3% viability

27Mar: 27% viability

52Apr: 52% viability

76May: 76% viability

83Jun: 83% viability

72Jul: 72% viability

75Aug: 75% viability

76Sep: 76% viability

37Oct: 37% viability

4Nov: 4% viability

0Dec: 0% viability

42%

Cold

12/12

Walking

80Jan: 80% viability

93Feb: 93% viability

98Mar: 98% viability

100Apr: 100% viability

100

100May: 100% viability

100

94Jun: 94% viability

95Jul: 95% viability

98Aug: 98% viability

99Sep: 99% viability

99Oct: 99% viability

96Nov: 96% viability

90Dec: 90% viability

12/12

Walking

80Jan: 80% viability

93Feb: 93% viability

98Mar: 98% viability

100Apr: 100% viability

100

100May: 100% viability

100

94Jun: 94% viability

95Jul: 95% viability

98Aug: 98% viability

99Sep: 99% viability

99Oct: 99% viability

96Nov: 96% viability

90Dec: 90% viability

95%

12/12

Running

80Jan: 80% viability

93Feb: 93% viability

98Mar: 98% viability

100Apr: 100% viability

100

100May: 100% viability

100

94Jun: 94% viability

95Jul: 95% viability

98Aug: 98% viability

99Sep: 99% viability

99Oct: 99% viability

96Nov: 96% viability

90Dec: 90% viability

12/12

Running

80Jan: 80% viability

93Feb: 93% viability

98Mar: 98% viability

100Apr: 100% viability

100

100May: 100% viability

100

94Jun: 94% viability

95Jul: 95% viability

98Aug: 98% viability

99Sep: 99% viability

99Oct: 99% viability

96Nov: 96% viability

90Dec: 90% viability

95%

Tap any month for details · Click activity name for overview

ComfortableModerateUncomfortable

Based on 2014–2024 hourly climate data · Updated Mar 2025

Confidence: High

Porvoo · Finland

Climate

Climate Lab·Porvoo

Lifestyle Calendar·Porvoo

Air Quality Profile

Air Quality Profile

Who thrives in Porvoo

Frequently asked about Porvoo

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