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Best Time to Visit Oslo
Real month-by-month weather for Oslo, and real flight prices from London — so "best time" here means something you can check, not a generic guess. July runs warmest (21°C avg high). August currently shows the cheapest real fares.
Oslo by month: weather & fares
Weather is averaged from 3 years of real historical data. Fares are the real cheapest on file from London that month.
| Month | Avg high / low | Avg rainfall | Cheapest fare |
|---|---|---|---|
| January | -2° / -9°C | ~86mm | — |
| February | 1° / -7°C | ~55mm | — |
| March | 4° / -5°C | ~59mm | — |
| April | 10° / 0°C | ~81mm | — |
| May | 18° / 6°C | ~40mm | — |
| June | 20° / 10°C | ~86mm | — |
| July | 21° / 12°C | ~152mm | €126 |
| August | 19° / 11°C | ~154mm | €86 |
| September | 16° / 8°C | ~118mm | — |
| October | 9° / 3°C | ~78mm | — |
| November | 3° / -2°C | ~75mm | — |
| December | 0° / -4°C | ~58mm | — |
Planning tips for Oslo
- Compare the weather and fare columns above together — the cheapest month isn't always the best-weather month.
- Shoulder-season travel (just before or after the busiest months) often balances good weather against lower prices.
- Book 4-8 weeks ahead where possible — a general pattern, not a guarantee for this specific destination.
- Check nearby airports above if Oslo has real alternatives — a short extra journey can mean a much lower fare.
- Factor in local public holidays and school terms at your destination, not just at home — prices and crowds follow both.
- Re-check rainfall, not just temperature — a warm month can still be a very wet one.
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FAQs — Best time to visit Oslo
July has the highest average temperatures, based on 3 years of real historical weather data.