Nasjonal sykkelrute 1 (Bergen–Trondheim): which way and when to ride
The best month for Nasjonal sykkelrute 1 (Bergen–Trondheim) is July: 59% of days were dry with highs of 10–30 °C. In July the wind barely favours either direction — on average 0.0 km/h along the route (ERA5 2006–2025, daytime 9:00–18:00).
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% | 212 | 2 °C | 0% | 99% | 6.0 † |
| February | 0% | 45% | 174 | 3 °C | 0% | 100% | 8.7 † |
| March | 2% | 46% | 183 | 4 °C | 0% | 97% | 11.5 |
| April | 18% | 37% | 126 | 7 °C | 0% | 80% | 14.7 |
| May | 41% | 36% | 110 | 11 °C | 0% | 47% | 17.7 |
| June | 57% | 38% | 125 | 14 °C | 0% | 11% | 19.8 |
| July | 59% | 41% | 145 | 16 °C | 0% | 1% | 18.8 |
| August | 54% | 46% | 188 | 16 °C | 0% | 1% | 16.0 |
| September | 50% | 48% | 242 | 14 °C | 0% | 10% | 12.8 |
| October | 21% | 49% | 262 | 9 °C | 0% | 59% | 9.8 † |
| November | 4% | 45% | 216 | 5 °C | 0% | 92% | 6.8 † |
| December | 0% | 50% | 241 | 3 °C | 0% | 99% | 5.1 † |
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 near Trondheim → Bergen, km/h | Headwind > 15 km/h, near Trondheim → Bergen | Headwind > 15 km/h, Bergen → near Trondheim | Better way |
|---|---|---|---|---|
| January | −5.4 | 21% | 5% | Bergen → near Trondheim |
| February | −5.4 | 20% | 4% | Bergen → near Trondheim |
| March | −4.6 | 21% | 6% | Bergen → near Trondheim |
| April | −1.8 | 15% | 8% | either |
| May | −0.3 | 12% | 9% | either |
| June | +0.4 | 11% | 10% | either |
| July | 0.0 | 10% | 7% | either |
| August | −1.2 | 12% | 6% | either |
| September | −3.9 | 19% | 5% | Bergen → near Trondheim |
| October | −4.3 | 19% | 5% | Bergen → near Trondheim |
| November | −4.4 | 19% | 5% | Bergen → near Trondheim |
| December | −5.9 | 22% | 4% | Bergen → near Trondheim |
Stages
The route is split into 8 stages of about 100–150 km between towns; each stage has its own page.
| Stage | km | Best month | Tailwind near Trondheim → Bergen in July, km/h |
|---|---|---|---|
| 1. near Trondheim → Aure | 146 | July | −1.5 |
| 2. Aure → near Molde | 124 | July | −0.3 |
| 3. near Molde → Brattvåg | 122 | July | +0.7 |
| 4. Brattvåg → Larsnes | 124 | July | +1.3 |
| 5. Larsnes → Florø | 134 | July | −1.1 |
| 6. Florø → Askvoll | 125 | June | −0.2 |
| 7. Askvoll → near Årås | 125 | July | +0.2 |
| 8. near Årås → Bergen | 94 | June | +1.8 |
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.