EuroVelo 12 - North Sea Cycle Route - part Norway, stage 11: Tønsberg → near Halden
On stage 11 (Tønsberg → near Halden, 132 km) the best month is September: 75% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.1 km/h on average; ERA5 2006–2025, 9:00–18:00).
← EuroVelo 12 - North Sea Cycle Route - part Norway (Whole route)
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 0% | 22% | 76 | 1 °C | 0% | 100% | 6.8 † |
| February | 1% | 19% | 60 | 2 °C | 0% | 99% | 9.1 † |
| March | 13% | 16% | 51 | 6 °C | 0% | 87% | 11.6 |
| April | 54% | 17% | 44 | 11 °C | 0% | 43% | 14.4 |
| May | 74% | 22% | 65 | 16 °C | 0% | 7% | 16.9 |
| June | 72% | 27% | 79 | 20 °C | 1% | 0% | 18.6 |
| July | 68% | 31% | 100 | 21 °C | 2% | 0% | 17.9 |
| August | 67% | 33% | 104 | 20 °C | 0% | 0% | 15.5 |
| September | 75% | 24% | 93 | 17 °C | 0% | 1% | 12.7 |
| October | 48% | 25% | 95 | 11 °C | 0% | 36% | 10.0 † |
| November | 10% | 26% | 85 | 6 °C | 0% | 85% | 7.5 † |
| December | 2% | 24% | 76 | 2 °C | 0% | 97% | 6.1 † |
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
| Month | Wind Tønsberg → near Halden, km/h | Headwind > 15 km/h, Tønsberg → near Halden | Headwind > 15 km/h, near Halden → Tønsberg | Better way |
|---|---|---|---|---|
| January | −0.5 | 9% | 8% | either |
| February | −0.6 | 8% | 7% | either |
| March | +0.1 | 7% | 7% | either |
| April | +0.5 | 5% | 7% | either |
| May | +0.4 | 6% | 7% | either |
| June | +0.9 | 4% | 8% | either |
| July | +0.7 | 4% | 7% | either |
| August | +0.3 | 5% | 7% | either |
| September | +0.1 | 6% | 8% | either |
| October | −0.2 | 8% | 8% | either |
| November | −0.5 | 9% | 8% | either |
| December | −0.2 | 8% | 8% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 1,140–1,165 | N | +4.2 |
| 1,165–1,190 | E | −0.4 |
| 1,190–1,215 | S | −3.8 |
| 1,215–1,240 | E | +3.5 |
| 1,240–1,266 | SE | −1.6 |
| 1,266–1,272 | S | −4.1 |
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.