Weather forecast for tomorrowPorvoo, Finland

Weather forecast for tomorrow

Sunday 18. Oct 2026

  • 9°C
  • -1°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 13km/hNNW 343°
  • Humidity: 79%
  • UV index: 1
  • Sunrise: 08:05 EEST
  • Sunset: 17:59 EEST
  • ▼
On Sunday, in Porvoo, expect plenty of sunshine and only a few scattered clouds.
Rainfall is not forecasted for tomorrow. Temperature span will be from a high of a frosty 9°C to a low of a subzero -1°C.
Sunrise will be at 08:05 and sunset at 17:59; tomorrow's daylight will last for 9h and 55min.

Hourly overview

Hourly temperatures

Warmest hour: 15h 9°C.
Coldest period: 6h - 9h 2°C.

Chance of precipitation

Highest chance: 6h - 9h 8%.

Hourly weather forecast

  • 0h
  • 6°C
  • Feels like:
    3°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 15km/hN 350°
  • Humidity: 86%
  • Pressure: 1024mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 2h
  • 4°C
  • Feels like:
    1°C
Mostly Clear
Mostly Clear
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 14km/hN 349°
  • Humidity: 90%
  • Pressure: 1026mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 4h
  • 3°C
  • Feels like:
    -1°C
Clear
Clear
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 13km/hNNW 348°
  • Humidity: 94%
  • Pressure: 1027mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 6h
  • 2°C
  • Feels like:
    -2°C
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 12km/hNNW 344°
  • Humidity: 95%
  • Pressure: 1028mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 8h
  • 1°C
  • Feels like:
    -3°C
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 12km/hNNW 341°
  • Humidity: 99%
  • Pressure: 1029mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunrise: 08:05
  • 10h
  • 3°C
  • Feels like:
    0°C
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 11km/hNNW 334°
  • Humidity: 92%
  • Pressure: 1030mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 12h
  • 6°C
  • Feels like:
    4°C
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 12km/hNNW 338°
  • Humidity: 76%
  • Pressure: 1031mbar
  • Visibility: 16km
  • UV index: 1
  • ▼
  • 14h
  • 8°C
  • Feels like:
    6°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 13km/hNNW 343°
  • Humidity: 66%
  • Pressure: 1032mbar
  • Visibility: 16km
  • UV index: 1
  • ▼
  • 16h
  • 9°C
  • Feels like:
    7°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 13km/hNNW 345°
  • Humidity: 65%
  • Pressure: 1032mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 17:59
  • 18h
  • 7°C
  • Feels like:
    4°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0mm
  • Wind: 10km/hN 357°
  • Humidity: 75%
  • Pressure: 1034mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 20h
  • 5°C
  • Feels like:
    2°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 9km/hN 6°
  • Humidity: 84%
  • Pressure: 1035mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 22h
  • 3°C
  • Feels like:
    0°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 9km/hNNE 19°
  • Humidity: 93%
  • Pressure: 1036mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Tomorrow, primarily cloudy and occasionally sunny weather is anticipated.
The temperature will vary between a minimum of 1°C and a maximum of 9°C. The feels-like temperature will be between the lowest temperature of -3°C and the highest temperature of 7°C. The warmest part of the day will be at 15h and 16h.
Updated: Oct 17, 2026 @ 10:27:02 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, expect plenty of sunshine and only a few scattered clouds.

No, it will not rain tomorrow.

Tomorrow, the highest temperature will be 9°C, while the lowest temperature will be -1°C.
The maximum temperature will be notably higher than the average highest temperature of 0°C in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Porvoo, sunrise will be at 08:05 and sunset at 17:59 (EEST).

Tomorrow, the daylight will last for 9h and 55min.