Underi Island
Historic maritime fort island near Alibag, Maharashtra
An offshore fort near the Konkan coast, Underi is approached by boat from Alibaug; visitors come for short coastal excursions, fort ruins and views of shipping lanes.
Underi at a Glance#
Address: Underi Island (near Alibag), Raigad district, Maharashtra, India
Hours: Open to the public (no formal hours)
Admission: Free (no formal ticketing for visiting the island/fort)
How to Get to Underi#
Boat from Alibag, Revdanda or Mandwa. From Mumbai, take the ferry to Mandwa or a road transfer to Alibag and then hire a local boat for a 20-40 minute trip (times vary with landing site and sea conditions). No formal docks or scheduled public services; arrange a private transfer and confirm conditions with the skipper.
Tips for Visiting Underi#
- Arrange a local boat from Revdanda, Alibag or Mandwa rather than attempting to approach independently-local skippers know the currents and safe landing spots.
- Visit at low tide if aiming for photographs of the fort's foundations; high tide can obscure sections of the shoreline.
- Combine a trip with nearby Khanderi (Kundvar) island to see the twin Maratha-era sea forts that once guarded Mumbai's approaches.
Best Time to Visit Underi#
Best visited in the dry winter months (November-February) when sea crossings from the mainland are most reliable.
Weather & Climate near Underi#
Tropical climate with very hot summers (peaking in May) and warm winters (coldest in January). Temperatures range from 18°C to 34°C. Heavy rainfall (2280 mm/year), wettest in July with a pronounced dry season.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Ideal | 19° - 30° | 24° | 1 mm | clear | 55% | 2.1 m/s | 1.4 high | 11.0h |
| February | Ideal | 19° - 31° | 25° | 1 mm | clear | 49% | 2.3 m/s | 1.8 very high | 11.4h |
| March | Ideal | 22° - 32° | 28° | 1 mm | clear | 49% | 2.4 m/s | 2.3 extreme | 11.9h |
| April | Ideal | 25° - 33° | 30° | 5 mm | clear | 56% | 2.9 m/s | 2.5 extreme | 12.4h |
| May | Excellent | 27° - 34° | 34° | 26 mm | mostly sunny | 63% | 3.6 m/s | 2.5 extreme | 12.9h |
| June | Acceptable | 26° - 32° | 35° | 522 mm | overcast | 81% | 4.7 m/s | 1.9 very high | 13.1h |
| July | Good | 25° - 30° | 32° | 774 mm | overcast | 89% | 5.0 m/s | 1.6 very high | 13.0h |
| August | Good | 25° - 29° | 27° | 522 mm | overcast | 90% | 4.8 m/s | 1.7 very high | 12.6h |
| September | Good | 24° - 30° | 31° | 318 mm | overcast | 89% | 3.3 m/s | 1.8 very high | 12.1h |
| October | Very Good | 24° - 32° | 32° | 94 mm | some cloud | 78% | 1.9 m/s | 1.7 very high | 11.6h |
| November | Excellent | 22° - 33° | 29° | 13 mm | clear | 70% | 2.0 m/s | 1.4 high | 11.2h |
| December | Ideal | 19° - 32° | 26° | 3 mm | clear | 63% | 1.9 m/s | 1.3 high | 10.9h |
