EuroVelo 10 - Baltic Sea Cycle Route - part Finland, stage 8: Pori → Uusikaupunki

On stage 8 (Pori → Uusikaupunki, 135 km) the best month is June: 77% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.0 km/h on average; ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← EuroVelo 10 - Baltic Sea Cycle Route - part Finland (Whole route)

135 kmLength

JuneBest months

eitherBetter direction in the best month

1.0 km/hAverage tailwind in the best month

77%Dry days with 10–30 °C

June · 77%Best summer month

Start: Pori · Finish: Uusikaupunki · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

Good days

Month	Good days	Rain days ≥ 1 mm	Rain, mm	Avg high	Days ≥ 30 °C	Days < 10 °C	Daylight, h
January	0%	17%	45	-1 °C	0%	100%	6.3 †
February	0%	15%	32	-1 °C	0%	100%	8.9 †
March	0%	14%	32	2 °C	0%	100%	11.6
April	14%	15%	36	6 °C	0%	85%	14.6
May	55%	16%	39	12 °C	0%	34%	17.4
June	77%	21%	54	17 °C	0%	2%	19.3
July	72%	28%	79	20 °C	0%	0%	18.5
August	70%	30%	87	19 °C	0%	0%	15.8
September	72%	24%	64	15 °C	0%	5%	12.8
October	28%	24%	74	9 °C	0%	60%	9.9 †
November	2%	22%	59	5 °C	0%	97%	7.1 †
December	0%	23%	56	1 °C	0%	100%	5.5 †

Best months are all months within 3 percentage points of the best one. † less than 11 hours of daylight — long stages get tight.

Wind by month

Wind Pori → Uusikaupunki, km/h

Month	Wind Pori → Uusikaupunki, km/h	Headwind > 15 km/h, Pori → Uusikaupunki	Headwind > 15 km/h, Uusikaupunki → Pori	Better way
January	−3.2	23%	11%	Uusikaupunki → Pori
February	−3.4	21%	10%	Uusikaupunki → Pori
March	−1.6	18%	12%	either
April	−0.3	15%	13%	either
May	−1.0	14%	11%	either
June	−1.0	13%	9%	either
July	−1.4	13%	9%	either
August	−3.2	19%	8%	Uusikaupunki → Pori
September	−3.0	19%	9%	Uusikaupunki → Pori
October	−3.4	24%	11%	Uusikaupunki → Pori
November	−3.9	23%	11%	Uusikaupunki → Pori
December	−4.4	27%	10%	Uusikaupunki → Pori

Along the route (sections of about 25 km)

km	Heading	Tailwind in June, km/h
858–883	SW	−4.9
883–909	SE	+4.3
909–934	SW	−4.8
934–959	SW	−2.0
959–984	S	+2.4
984–993	S	−1.5

Other stages

How to read the numbers

Wind is the 10 m wind of a 25-km grid cell, daytime hours 9:00–18:00 local solar time; at saddle height in a sheltered valley it is weaker, on a coast or ridge stronger. A positive value is a tailwind. ERA5 slightly over-counts days with ≥ 1 mm of rain (by about 5–7 percentage points) and underestimates daily highs by 1–2 °C. Good day = less than 1 mm of rain between 9:00 and 18:00 (riding hours, local solar time) and a high between 10 and 30 °C; rain at night or in the evening does not spoil it.