Radweg D11: Ostsee – Oberbayern, stage 8: Rosenthal → Lichtenfels

On stage 8 (Rosenthal → Lichtenfels, 134 km) the best month is September: 76% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.5 km/h on average; ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← Radweg D11: Ostsee – Oberbayern (Whole route)

134 kmLength

SeptemberBest months

eitherBetter direction in the best month

1.5 km/hAverage tailwind in the best month

76%Dry days with 10–30 °C

June · 66%Best summer month

Start: Rosenthal · Finish: Lichtenfels · 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	1%	30%	79	2 °C	0%	98%	8.5 †
February	6%	24%	56	3 °C	0%	93%	10.0 †
March	28%	27%	61	8 °C	0%	67%	11.7
April	56%	28%	53	13 °C	0%	31%	13.7
May	65%	32%	79	17 °C	0%	7%	15.4
June	66%	31%	76	21 °C	3%	0%	16.4
July	61%	32%	85	23 °C	8%	0%	16.0
August	64%	30%	85	22 °C	7%	0%	14.5
September	76%	23%	69	18 °C	0%	3%	12.5
October	56%	24%	63	12 °C	0%	29%	10.6 †
November	16%	24%	64	6 °C	0%	80%	8.9 †
December	2%	29%	78	3 °C	0%	97%	8.1 †

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 Rosenthal → Lichtenfels, km/h

Month	Wind Rosenthal → Lichtenfels, km/h	Headwind > 15 km/h, Rosenthal → Lichtenfels	Headwind > 15 km/h, Lichtenfels → Rosenthal	Better way
January	−3.5	15%	3%	Lichtenfels → Rosenthal
February	−2.5	13%	4%	Lichtenfels → Rosenthal
March	−1.5	12%	6%	either
April	−0.1	7%	6%	either
May	−0.4	8%	5%	either
June	−1.2	6%	3%	either
July	−2.8	9%	2%	Lichtenfels → Rosenthal
August	−2.6	6%	1%	Lichtenfels → Rosenthal
September	−1.5	6%	3%	either
October	−2.5	9%	3%	Lichtenfels → Rosenthal
November	−3.1	11%	2%	Lichtenfels → Rosenthal
December	−3.9	14%	3%	Lichtenfels → Rosenthal

Along the route (sections of about 25 km)

km	Heading	Tailwind in September, km/h
916–941	SE	+2.1
941–966	S	−1.4
966–991	SW	−3.2
991–1,016	W	−2.6
1,016–1,041	W	−2.2
1,041–1,050	W	−2.7

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.