6383 Porvoo lighthouse – Kalbådagrund
| Eiswinter | Anfang | Ende | Saisonlänge | Tage mit Eis | FL.Summe | Vol.Summe | max.Dicke | Restrictions |
| 2026 | 27.Jan 2026 | 16.Feb 2026 | 21 | 21 | 18.3 | 203.2 | 27.5 | nan | 21 | 17 | 10 | 10 | 10 | 3 | 0 | 0 | 0 | 0 |
| 2025 | 19.Feb 2025 | 21.Feb 2025 | 3 | 3 | 0.2 | 0.6 | 2.5 | nan | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2024 | 08.Jan 2024 | 29.Mar 2024 | 82 | 68 | 31.9 | 505.8 | 27.5 | nan | 68 | 68 | 68 | 68 | 68 | 46 | 0 | 0 | 0 | 0 |
| 2023 | 21.Jan 2023 | 16.Mar 2023 | 55 | 13 | 3.5 | 11.1 | 7.5 | nan | 13 | 13 | 13 | 13 | 13 | 0 | 0 | 0 | 0 | 0 |
| 2022 | 28.Dec 2021 | 31.Mar 2022 | 94 | 23 | 2.6 | 6.6 | 2.5 | nan | 20 | 20 | 20 | 20 | 20 | 0 | 0 | 0 | 0 | 0 |
| 2021 | 04.Feb 2021 | 23.Mar 2021 | 48 | 47 | 21.8 | 198.7 | 13.0 | nan | 47 | 47 | 47 | 47 | 47 | 27 | 0 | 0 | 0 | 0 |
| 2019 | 27.Jan 2019 | 19.Feb 2019 | 24 | 14 | 3.1 | 16.2 | 12.5 | nan | 11 | 11 | 11 | 11 | 11 | 0 | 0 | 0 | 0 | 0 |
| 2018 | 07.Feb 2018 | 06.Apr 2018 | 59 | 57 | 33.1 | 469.8 | 27.5 | nan | 53 | 53 | 52 | 52 | 52 | 23 | 0 | 0 | 0 | 0 |
| 2017 | 10.Feb 2017 | 11.Mar 2017 | 30 | 13 | 1.6 | 5.2 | 7.5 | nan | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2016 | 16.Jan 2016 | 01.Feb 2016 | 17 | 15 | 7.0 | 43.8 | 12.5 | nan | 10 | 10 | 5 | 5 | 5 | 0 | 0 | 0 | 0 | 0 |
| 2014 | 19.Feb 2014 | 23.Feb 2014 | 5 | 5 | 1.0 | 12.5 | 12.5 | nan | 5 | 5 | 5 | 5 | 5 | 0 | 0 | 0 | 0 | 0 |
| 2013 | 30.Dec 2012 | 17.Apr 2013 | 109 | 92 | 50.7 | 847.9 | 39.0 | nan | 87 | 87 | 85 | 85 | 85 | 19 | 0 | 0 | 0 | 0 |
| 2012 | 03.Feb 2012 | 18.Mar 2012 | 45 | 44 | 27.3 | 462.3 | 27.5 | nan | 40 | 39 | 39 | 39 | 39 | 33 | 0 | 0 | 0 | 0 |
| 2011 | 25.Dec 2010 | 18.Apr 2011 | 115 | 100 | 74.0 | 1817.4 | 40.0 | nan | 100 | 98 | 98 | 98 | 98 | 72 | 0 | 0 | 0 | 0 |
| 2010 | 07.Jan 2010 | 11.Apr 2010 | 95 | 94 | 62.0 | 1024.1 | 28.0 | nan | 92 | 92 | 92 | 92 | 92 | 67 | 0 | 0 | 0 | 0 |
| 2009 | 16.Feb 2009 | 30.Mar 2009 | 43 | 41 | 29.2 | 327.3 | 13.0 | nan | 37 | 36 | 34 | 34 | 34 | 0 | 0 | 0 | 0 | 0 |
| 2007 | 10.Feb 2007 | 21.Mar 2007 | 40 | 37 | 19.4 | 225.8 | 13.0 | nan | 34 | 34 | 34 | 34 | 34 | 18 | 0 | 0 | 0 | 0 |
| 2006 | 31.Jan 2006 | 27.Apr 2006 | 87 | 85 | 71.6 | 1111.4 | 28.0 | nan | 83 | 83 | 83 | 83 | 83 | 55 | 0 | 0 | 0 | 0 |
| 2005 | 23.Feb 2005 | 07.Apr 2005 | 44 | 43 | 29.5 | 264.7 | 13.0 | nan | 43 | 43 | 43 | 43 | 43 | 0 | 0 | 0 | 0 | 0 |
| 2004 | 22.Jan 2004 | 05.Apr 2004 | 75 | 74 | 61.1 | 596.3 | 13.0 | nan | 74 | 74 | 74 | 74 | 74 | 24 | 0 | 0 | 0 | 0 |
| 2003 | 29.Dec 2002 | 11.May 2003 | 134 | 128 | 113.4 | 3825.6 | 40.0 | nan | 126 | 124 | 124 | 124 | 124 | 105 | 0 | 0 | 0 | 0 |
| 2002 | 01.Jan 2002 | 14.Mar 2002 | 73 | 16 | 4.7 | 12.2 | 7.5 | nan | 11 | 11 | 11 | 11 | 11 | 0 | 0 | 0 | 0 | 0 |