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Best Time for Turku, Naantali & the Nagu Archipelago Gateway
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Sweet spot: May, June, July. Computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.
💡 Good to know
- Long summer daylight supports this three- or four-day gateway. The Pargas–Nagu road ferry is frequent, but vehicles still board by queue, available deck capacity, weather and crew instructions.
- This curated gateway is published only from June through August, when the retained 2026 evidence supports its summer visitor services and exact three- or four-day form. The road ferry also runs outside summer, but use current off-season schedules and build a different plan rather than reusing this one.
| Month | Low | High | Rain | Daylight | |
|---|---|---|---|---|---|
| January | −5.2°C | −1.5°C | 60 mm | 6.2 h | ❄ |
| February | −6.2°C | −1.7°C | 46 mm | 8.6 h | ❄ |
| March | −4.0°C | 1.4°C | 42 mm | 11.3 h | ❄ |
| April | 0.2°C | 7.0°C | 40 mm | 14.3 h | ❄ |
| May | 5.4°C | 13.2°C | 45 mm | 16.9 h | |
| June | 10.2°C | 17.4°C | 60 mm | 18.6 h | |
| July | 14.1°C | 21.0°C | 62 mm | 17.9 h | |
| August | 13.6°C | 20.1°C | 72 mm | 15.4 h | |
| September | 9.7°C | 15.3°C | 64 mm | 12.5 h | |
| October | 4.5°C | 8.7°C | 79 mm | 9.7 h | |
| November | 1.0°C | 4.1°C | 75 mm | 7.0 h | ❄ |
| December | −2.4°C | 0.8°C | 70 mm | 5.4 h | ❄ |