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Fishing Calendar for Lake Cerknica, Slovenia

An intermittent karst lake that floods each autumn and drains underground each summer, filling with pike, tench and carp whenever water levels allow, making timing essential for anglers who visit.

Lake · 45.7667, 14.3667 · times shown in local time (Europe/Ljubljana)

Stržen and Cerkniščica near Lake Cerknica right now

From the gauge at Dolenje Jezero · 8 Oct, 03:00 · Open on River map →

The nearest gauged waters to Lake Cerknica are the Stržen and the Cerkniščica. On 8 October 2026 at 03:00 the Stržen at Dolenje Jezero stood at 76 cm, which the gauging agency rates as low level, with the water at 13.8 °C.

Water level 76 cm Low steady over 24 h
Water temperature 13.8 °C up 1.6 °C in 24 h
Gorenje JezeroDolenje JezeroCerknica IThis spot

The Stržen over the last 7 days

Readings every hour at Dolenje Jezero, the gauge nearest this spot. The shaded band is the gauge's usual range over the last 30 days.

Water level

76 cm
Dolenje Jezero · last 7 days
7692108Fri 2Sat 3Sun 4Mon 5Tue 6Wed 7

Water temperature

13.8 °C
Dolenje Jezero · last 7 days
101417Fri 2Sat 3Sun 4Mon 5Tue 6Wed 7

Gauges near Lake Cerknica

3 official gauges within 25 km on the Stržen and the Cerkniščica, the nearest highlighted. Flow is coloured as the gauging agency rates it: Low Normal High

GaugeFlowLevelWaterLast 7 days
Gorenje JezeroStržen 5 km away — 19 cm 11.8 °C
Dolenje JezeronearestStržen 0 km away — 76 cm 13.8 °C
Cerknica ICerkniščica 3 km away 0.00 m³/s Low — —

Best fishing times in October 2026

DateMoonSunriseSunset Major periodsMinor periodsEfficiency
Thu 01 Waning gibbous 07:00 18:42 03:33–05:33, 16:06–18:06 09:49–11:49, 22:22–00:22 39% ●●○○○
Fri 02 Waning gibbous 07:01 18:41 04:35–06:35, 17:08–19:08 10:52–12:52 78% ●●●●○
Sat 03 Waning gibbous 07:03 18:39 05:37–07:37, 18:10–20:10 23:21–01:21, 11:54–13:54 98% ●●●●●
Sun 04 Waning crescent 07:04 18:37 06:38–08:38, 19:09–21:09 00:23–02:23, 12:54–14:54 84% ●●●●●
Mon 05 Waning crescent 07:05 18:35 07:35–09:35, 20:04–22:04 01:21–03:21, 13:50–15:50 47% ●●●○○
Tue 06 Waning crescent 07:07 18:33 08:28–10:28, 20:55–22:55 02:14–04:14, 14:42–16:42 15% ●○○○○
Wed 07 Waning crescent 07:08 18:31 09:17–11:17, 21:43–23:43 03:04–05:04, 15:30–17:30 14% ●○○○○
Thu 08 Waning crescent 07:09 18:29 10:04–12:04, 22:29–00:29 03:51–05:51, 16:16–18:16 39% ●●○○○
See efficiency and feeding times for every day in the Fishing Calendar app — get it for iOS or Android.
Fri 09 Waning crescent 07:10 18:27 ····· ····· Unlock · iOS / Android
Sat 10 Waning crescent 07:12 18:26 ····· ····· Unlock · iOS / Android
Sun 11 New moon 07:13 18:24 ····· ····· Unlock · iOS / Android
Mon 12 Waxing crescent 07:14 18:22 ····· ····· Unlock · iOS / Android
Tue 13 Waxing crescent 07:16 18:20 ····· ····· Unlock · iOS / Android
Wed 14 Waxing crescent 07:17 18:18 ····· ····· Unlock · iOS / Android
Thu 15 Waxing crescent 07:18 18:17 ····· ····· Unlock · iOS / Android
Fri 16 Waxing crescent 07:20 18:15 ····· ····· Unlock · iOS / Android
Sat 17 Waxing crescent 07:21 18:13 ····· ····· Unlock · iOS / Android
Sun 18 First quarter 07:22 18:11 ····· ····· Unlock · iOS / Android
Mon 19 Waxing gibbous 07:24 18:10 ····· ····· Unlock · iOS / Android
Tue 20 Waxing gibbous 07:25 18:08 ····· ····· Unlock · iOS / Android
Wed 21 Waxing gibbous 07:27 18:06 ····· ····· Unlock · iOS / Android
Thu 22 Waxing gibbous 07:28 18:04 ····· ····· Unlock · iOS / Android
Fri 23 Waxing gibbous 07:29 18:03 ····· ····· Unlock · iOS / Android
Sat 24 Waxing gibbous 07:31 18:01 ····· ····· Unlock · iOS / Android
Sun 25 Waxing gibbous 06:32 17:00 ····· ····· Unlock · iOS / Android
Mon 26 Waning gibbous 06:33 16:58 ····· ····· Unlock · iOS / Android
Tue 27 Waning gibbous 06:35 16:56 ····· ····· Unlock · iOS / Android
Wed 28 Waning gibbous 06:36 16:55 ····· ····· Unlock · iOS / Android
Thu 29 Waning gibbous 06:38 16:53 ····· ····· Unlock · iOS / Android
Fri 30 Waning gibbous 06:39 16:52 ····· ····· Unlock · iOS / Android
Sat 31 Waning gibbous 06:40 16:50 ····· ····· Unlock · iOS / Android

Fish recorded around Lake Cerknica

Species recorded around Lake Cerknica and along the Stržen and the Cerkniščica, from GBIF occurrence ranges.

Frequently asked questions

Is the Stržen near Lake Cerknica high right now?
No. On 8 October 2026 the gauging agency rated the level of the Stržen at Dolenje Jezero as low (76 cm). This page shows the current reading whenever you open it.
What fish are around Lake Cerknica?
Species recorded around Lake Cerknica and along the Stržen and the Cerkniščica include Tench, Northern pike, Common carp, Salmo marmoratus, European grayling, European bullhead. The list comes from GBIF occurrence ranges, so it shows where a species has been recorded rather than how common it is.
Where can I check water levels near Lake Cerknica?
3 official gauges within 25 km of Lake Cerknica measure the Stržen and the Cerkniščica. Their latest readings are listed on this page and on the River map.
When is the best time to fish at Lake Cerknica?
The highest-rated day in the current month at Lake Cerknica is 10 October 2026, with a fishing efficiency of 100%.
Do moon phases affect fishing at Lake Cerknica?
Solunar theory links feeding activity to the moon's position. Major periods occur when the moon is overhead or underfoot, with shorter minor periods midway between them. New and full moons generally produce the strongest activity.

River data sources

Readings on this page come from official gauging stations:

Nearby fishing spots