EuroVelo 12 - North Sea Cycle Route - part Norway, stage 4: Jørpeland → Kleppe
On stage 4 (Jørpeland → Kleppe, 113 km) the best month is June: 66% of days were dry with highs of 10–30 °C, and riding Kleppe → Jørpeland meant an average tailwind of 2.7 km/h (ERA5 2006–2025, 9:00–18:00).
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Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 0% | 45% | 199 | 4 °C | 0% | 100% | 6.9 † |
| February | 0% | 41% | 159 | 4 °C | 0% | 100% | 9.2 † |
| March | 4% | 36% | 124 | 6 °C | 0% | 96% | 11.6 |
| April | 28% | 33% | 92 | 9 °C | 0% | 68% | 14.3 |
| May | 50% | 32% | 104 | 12 °C | 0% | 31% | 16.9 |
| June | 66% | 33% | 106 | 15 °C | 0% | 2% | 18.4 |
| July | 58% | 42% | 153 | 17 °C | 0% | 0% | 17.8 |
| August | 56% | 44% | 193 | 17 °C | 0% | 0% | 15.4 |
| September | 53% | 46% | 217 | 15 °C | 0% | 2% | 12.7 |
| October | 33% | 48% | 234 | 11 °C | 0% | 31% | 10.1 † |
| November | 8% | 45% | 220 | 7 °C | 0% | 77% | 7.6 † |
| December | 0% | 48% | 232 | 5 °C | 0% | 97% | 6.2 † |
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
| Month | Wind Jørpeland → Kleppe, km/h | Headwind > 15 km/h, Jørpeland → Kleppe | Headwind > 15 km/h, Kleppe → Jørpeland | Better way |
|---|---|---|---|---|
| January | −0.4 | 17% | 15% | either |
| February | −0.4 | 16% | 14% | either |
| March | −1.0 | 14% | 12% | either |
| April | −1.5 | 14% | 10% | either |
| May | −2.0 | 15% | 10% | either |
| June | −2.7 | 16% | 9% | Kleppe → Jørpeland |
| July | −2.9 | 14% | 8% | Kleppe → Jørpeland |
| August | −2.7 | 15% | 10% | Kleppe → Jørpeland |
| September | −2.2 | 16% | 11% | Kleppe → Jørpeland |
| October | −1.3 | 18% | 13% | either |
| November | −0.5 | 16% | 13% | either |
| December | −1.2 | 17% | 12% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 340–365 | SW | −2.5 |
| 365–390 | W | −8.1 |
| 390–415 | NW | −4.7 |
| 415–440 | S | +2.5 |
| 440–453 | S | +1.6 |
Other stages
- Bergen → Leirvik 110 km
- Leirvik → near Haugesund 116 km
- near Haugesund → Jørpeland 115 km
- Jørpeland → Kleppe 113 km
- Kleppe → Flekkefjord 128 km
- Flekkefjord → Lyngdal 114 km
- Lyngdal → Kristiansand 104 km
- Kristiansand → Tvedestrand 116 km
- Tvedestrand → near Porsgrunn 116 km
- near Porsgrunn → Tønsberg 110 km
- Tønsberg → near Halden 132 km
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.