KoiluotoWhen to Go
Best Time to Visit Koiluoto
Summer is the easiest and most pleasant time to visit, with calm waters and long daylight.
Summer
June-August · 15-25°C (59-77°F)
Calmest seas and easiest access by small boat; ideal for picnics and short excursions.
Late spring/early autumn
May & September · 5-15°C (41-59°F)
Cooler and quieter; bird migration can be interesting during these windows.
Weather & Climate near Koiluoto
Climate
Continental climate with mild summers (peaking in July) and freezing winters (coldest in February). Temperatures range from -10°C to 21°C. Moderate rainfall (673 mm/year).
Air Quality:
AQI 21
Good
Best Time to Visit
JuneJulyAugust
Temperature & Rainfall
Temperature Range
28°
Warmest Month
-30°
Coldest Month
Monthly Conditions
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | -9° - -4° | -12° | 46 mm | overcast | 96% | 4.0 m/s | 0.0 low | 6.4h |
| February | Poor | -10° - -4° | -13° | 37 mm | overcast | 97% | 3.5 m/s | 0.1 low | 8.8h |
| March | Poor | -6° - 1° | -7° | 41 mm | partly cloudy | 93% | 3.6 m/s | 0.2 low | 11.6h |
| April | Acceptable | -1° - 6° | -1° | 36 mm | partly cloudy | 85% | 3.7 m/s | 0.6 moderate | 14.4h |
| May | Good | 5° - 14° | 8° | 34 mm | partly cloudy | 80% | 3.5 m/s | 1.0 moderate | 17.0h |
| June | Very Good | 10° - 19° | 15° | 49 mm | partly cloudy | 80% | 3.3 m/s | 1.2 high | 18.5h |
| July | Very Good | 13° - 21° | 17° | 65 mm | partly cloudy | 81% | 3.5 m/s | 1.2 high | 17.8h |
| August | Good | 12° - 19° | 16° | 78 mm | partly cloudy | 81% | 3.2 m/s | 0.9 moderate | 15.4h |
| September | Acceptable | 7° - 14° | 11° | 71 mm | overcast | 86% | 3.6 m/s | 0.4 low | 12.7h |
| October | Poor | 3° - 8° | 2° | 73 mm | overcast | 90% | 4.3 m/s | 0.1 low | 9.9h |
| November | Poor | -2° - 2° | -5° | 76 mm | overcast | 93% | 4.7 m/s | 0.0 low | 7.2h |
| December | Poor | -7° - -1° | -9° | 67 mm | overcast | 95% | 4.4 m/s | 0.0 low | 5.5h |
Getting There & Around
How to Get to Koiluoto
Koiluoto is accessible by private boat from nearby coastal towns in Kymenlaakso. There are no scheduled ferries; plan your own transport and verify local navigation charts.
Tips for Visiting Koiluoto
- Check local tide charts and boat schedules if approaching by water; the islet is easiest to reach by private boat from nearby towns.
- The island is small and largely natural - stay on durable surfaces to protect vegetation and bird nesting habitats.
- There are limited facilities; bring any needs with you and pack out everything you bring.