Grotta Gigante
An underground chamber so large it could hold St Peter's Basilica: for years it was in the Guinness Book of Records as the world's largest single-chamber show cave. Two long pendulums hang from the ceiling, measuring the movements of the Earth.
In the itineraries
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Weather forecast
The forecast for the next 7 days at this spot: sky, temperatures, rain and wind.
Forecast by Open-Meteo (CC BY 4.0), from the models of national weather services. Your browser downloads it directly from Open-Meteo, and only when you ask. In the mountains and at sea the weather changes quickly: check the official forecast as well before you set off.
Getting there
- By train. The nearest station is Villa Opicina / Opčine station, 2.7 km away. Alternatively: Miramare station, 3.5 km away.
- By sea. The nearest ferry terminal is Cedas, 2.7 km away.
- By air. The nearest airport is Trieste Airport (TRS), about 26 km away; with more flights, Venice Airport (VCE) is about 113 km away.
- Parking. There are many signposted car parks within a kilometre; the nearest is 50 m away.
Stations, ports, airports and car parks from OpenStreetMap (© OpenStreetMap contributors, ODbL); distances as the crow flies. Timetables and connections change: check them before you travel.
Climate month by month
The most pleasant months for weather are from May to October, with average highs between 18 and 29 °C. The wettest month is November (about 138 mm), the driest July.
| Month | Temperature | High / low | Rain mm |
|---|---|---|---|
| Jan | from 2 to 7 °C | 7° 2° | 78 |
| Feb | from 3 to 9 °C | 9° 3° | 89 |
| Mar | from 4 to 12 °C | 12° 4° | 71 |
| Apr | from 8 to 15 °C | 15° 8° | 74 |
| May | from 13 to 20 °C | 20° 13° | 116 |
| Jun | from 18 to 25 °C | 25° 18° | 80 |
| Jul | from 20 to 27 °C | 27° 20° | 67 |
| Aug | from 20 to 28 °C | 28° 20° | 88 |
| Sep | from 16 to 23 °C | 23° 16° | 131 |
| Oct | from 12 to 18 °C | 18° 12° | 126 |
| Nov | from 7 to 12 °C | 12° 7° | 138 |
| Dec | from 4 to 8 °C | 8° 4° | 113 |
Averages for 2015–2024, estimated for an altitude of 273 m. Air: NASA POWER (MERRA-2 reanalysis), corrected for the altitude of the place; rain: average monthly total. These are indicative values: the weather on any given day can be very different, so always check the forecast before you go.
On foot and on the water, nearby
- Strada Napoleonica, from Opicina to ProseccoTrail · T · 3.3 km · +50 m · 1–1.5 hours · 4 km
- Snorkelling in the Miramare reserveWater sports · Snorkelling · Beginners, with a guide · 4 km
- Val Rosandra loopTrail · E · 8.6 km · +330 m · 3–3.5 hours · 13 km
- ★ Kayaking beneath the Duino cliffsWater sports · Kayaking, SUP, Snorkelling · Beginner to intermediate · 14 km
Nearby
- ★ Karst osmizeTown · 3 km as the crow flies
- Miramare CastleHistory and art · 4 km as the crow flies
- TriesteTown · 7 km as the crow flies
- Risiera di San SabbaHistory and art · 10 km as the crow flies
- Val RosandraNature · 13 km as the crow flies
- ★ Duino and the Rilke TrailHistory and art · 14 km as the crow flies
← See it on the map with all 25 placesGuide to Friuli Venezia Giulia