Climate Chart of Pori, Finland

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

For Pori, Finland, the climate data cover 2013–2023 and show a clear range across the year. Monthly mean temperatures reach July at 17.2 °C and fall to January at -3.2 °C; these are monthly averages, not daytime highs or lows. The monthly rainfall, sunshine and snowfall figures add useful context for planning, but each describes an average rather than guaranteeing what any particular day will bring.

Climate overview

Temperature

July has the highest monthly mean temperature, at 17.2 °C, while January has the lowest, at -3.2 °C. These values describe the average temperature for each month, not daytime maximums, so they offer a broad guide to the temperature pattern rather than a forecast of conditions during a visit. Across the calendar months, the unweighted mean of monthly mean temperatures is 6.3 °C. It summarizes the monthly averages without weighting them by the number of days in each month.

Rain

Mean daily rainfall is lowest in February, at 0.52 mm/day, and highest in August, at 3.20 mm/day. These are average daily amounts, not monthly totals; they do not tell you how often rain falls or guarantee dry weather in the lower-rainfall month. The unweighted mean of the monthly mean daily rainfall figures is 1.58 mm/day. Use this as a broad summary of the supplied monthly averages, rather than as a day-weighted annual figure.

Sunshine

Average daily sunshine reaches its highest monthly mean in June, at 13.84 hours/day, and its lowest in December, at 0.77 hours/day. Sunshine duration can help with outdoor planning, but it is not the same as day length and does not establish how clear any particular day will be. The unweighted mean of the monthly mean daily sunshine durations is 7.30 hours/day, giving a summary across the calendar months rather than a day-weighted annual average.

Snow

Mean daily snowfall is highest in January, at 7.42 mm/day. This is an average snowfall amount, not a monthly total, and it cannot establish the number of snowy days, snow depth, snow cover or skiing conditions. The unweighted mean of the monthly mean daily snowfall figures is 2.39 mm/day. It summarizes the monthly averages and should not be read as a day-weighted annual snowfall amount.

Best Travel Time Guide for Pori, Finland: Ideal Seasons and Weather Insights

For visitors prioritising lower average rainfall, February is the conditional option in the supplied figures, with mean daily rainfall of 0.52 mm/day. That average does not promise dry days or show how frequently rain occurs, so retain flexible plans and bring suitable rain protection. If preparing around the highest monthly mean daily rainfall, note August at 3.20 mm/day; the figure is a daily average, not a monthly accumulation or a forecast for each day. Those seeking cooler monthly averages can consider January, whose mean temperature is -3.2 °C. Since this is a monthly mean rather than a daytime minimum, pack for variable conditions rather than treating it as a guaranteed temperature.

For daylight outdoor planning, June has the highest mean daily sunshine duration, 13.84 hours/day; this measures sunshine, not day length, and cannot guarantee clear weather. The lowest mean is in December, at 0.77 hours/day, which may matter if sunshine duration is a priority. The recorded highest mean daily snowfall is in January, at 7.42 mm/day. Treat this as an average amount only: it does not indicate snowy-day frequency or snow cover, so it cannot by itself establish winter travel or recreation conditions.

Climate Data Overview for Pori, Finland

Explore the comprehensive climate data for Pori, Finland. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

Month	Average: Temperature °C	Rain (mm) / day	Snow (mm) / day	Sunshine (h) / day
Jan	-3.2	0.55	7.42	1.20
Feb	-2.2	0.52	6.39	3.30
Mar	-0.8	0.56	4.32	6.89
Apr	3.7	0.97	2.15	10.18
May	9.9	1.44	0.25	12.32
Jun	14.9	1.81	0.00	13.84
Jul	17.2	2.83	0.00	13.39
Aug	16.4	3.20	0.00	11.14
Sep	12.0	2.08	0.00	8.04
Oct	6.2	1.99	0.97	4.69
Nov	2.4	1.85	2.46	1.78
Dec	-0.6	1.18	4.71	0.77
Average	6.3	1.58	2.39	7.30