Climate averages 1991–2020
Pori weather
in August.
A mild, moderately wet month: the 2nd warmest and one of the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Pori: daytime highs average 19.0°C and nights cool to about 13.5°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 74 mm of rain on roughly 12 days, which makes August a moderately wet month (one of the wettest months of the year). Daylight, from sunrise to sunset, lasts about 15 h 54 min on an average August day.
The nearest other city in this atlas is Tampere (106 km away). In August its highs average 19.1°C, about as warm as Pori, with 75 mm of rain.
Among the 13 cities listed in Finland, Pori ranks 9th of 13 for the warmest August highs and 6th of 13 for the driest August (rainfall, lowest first). The mean August high of those 13 cities is 19.2°C; Pori is 0.2°C cooler than that mean.
From August to September, average highs fall by 4.9°C to 14.1°C, and monthly rainfall falls from 74 mm to 62 mm.
The annual picture
August in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Pori climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.5°C-5.3°C | -5.3°C | 43 | 10.2 | 6.46 h |
| February | -2.1°C-6.5°C | -6.5°C | 34 | 8.0 | 8.99 h |
| March | 1.2°C-4.1°C | -4.1°C | 33 | 8.3 | 11.712 h |
| April | 7.0°C0.6°C | 0.6°C | 33 | 8.2 | 14.715 h |
| May | 12.5°C5.6°C | 5.6°C | 39 | 7.8 | 17.517 h |
| June | 16.8°C10.4°C | 10.4°C | 60 | 10.3 | 19.319 h |
| July | 20.0°C14.0°C | 14.0°C | 74 | 11.7 | 18.518 h |
| August, selected | 19.0°C13.5°C | 13.5°C | 74 | 12.2 | 15.916 h |
| September | 14.1°C9.4°C | 9.4°C | 62 | 10.2 | 13.013 h |
| October | 7.7°C4.2°C | 4.2°C | 65 | 11.5 | 10.110 h |
| November | 3.2°C0.4°C | 0.4°C | 56 | 11.1 | 7.37 h |
| December | 0.4°C-2.9°C | -2.9°C | 52 | 11.5 | 5.66 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Tampere in AugustFinland · 106 kmHigh 19.1°C · Low 13.2°C · 75 mm rain
- Turku in AugustFinland · 117 kmHigh 20.1°C · Low 12.9°C · 80 mm rain
- Mariehamn in AugustAland Islands · 184 kmHigh 18.3°C · Low 15.4°C · 55 mm rain
- Espoo in AugustFinland · 210 kmHigh 19.5°C · Low 14.1°C · 70 mm rain
- Lahti in AugustFinland · 215 kmHigh 19.6°C · Low 12.9°C · 68 mm rain
- Vantaa in AugustFinland · 220 kmHigh 20.3°C · Low 13.3°C · 76 mm rain
- Jyväskylä in AugustFinland · 223 kmHigh 18.8°C · Low 12.7°C · 72 mm rain
- Helsinki in AugustFinland · 224 kmHigh 19.6°C · Low 13.9°C · 76 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Pori) is explained once on the Pori year overview and on the Sources, method and limits page.