Main image

USGS/NASA Landsat Program, RXerself CC BY-SA 4.0 Wikimedia Commons

Karimunjawa

Islands

Karimunjawa is an Indonesian archipelago off Central Java known for white-sand beaches, coral reefs and small fishing villages; tourists arrive to snorkel, dive, relax on beaches and sample fresh seafood.

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Karimunjawa essentials

Address: Karimunjawa Archipelago, Central Java, Indonesia
Hours: Island open year-round; boat schedules vary seasonally
Admission: No entrance fee for beaches and public areas; island park fees or boat transfer fares apply. Ferry and fast-boat services charge per passenger.
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About Karimunjawa

Karimunjawa is an Indonesian archipelago and marine conservation area in the Java Sea off the north coast of Central Java, known for white-sand beaches, clear water and coral reefs.

The group contains around two dozen islands and islets; the largest islands host the main settlements, beaches and basic tourist facilities, while many smaller islands are fringing-reef environments popular for snorkeling and diving. Reef flats, seagrass beds and reef slopes support a diversity of marine life and are protected within the marine park.

Traditional fishing and small-scale agriculture support the island communities, and tourism focuses on day trips, snorkeling, diving and beach recreation. Facilities are concentrated on the main islands where guesthouses, simple restaurants and boat operators serve visitors.

Geographically the archipelago lies north of Central Java and is reached by ferry from the port of Jepara or by small aircraft and charter boat services that operate from coastal towns on Java.

  • Island count and marine protection: The archipelago comprises roughly 20 to 30 islands and islets; coral reefs and seagrass beds around the islands are protected within a marine park.
  • Access: Ferry connections from Jepara on Java take several hours; small aircraft and charter boats also provide occasional access to the islands’ airstrip and harbours.

What to See#

  • Karimun Jawa (main island): Karimun Jawa (the main island) hosts the largest settlements and beaches, and serves as the ferry and service hub for the archipelago.
  • Kemujan: Kemujan is the second-largest island and contains agricultural areas and the archipelago’s main support facilities and local communities.
  • Peripheral islands and reefs: Smaller islands such as Menjangan Besar and Menjangan Kecil are notable for coral reefs and snorkeling sites, forming part of the marine park’s protected waters.
When to Go

Best Time to Visit Karimunjawa

Visit during the dry season (Apr-Oct) for optimal sea conditions for snorkeling and diving.

Dry season
April-October · 25-32°C (77-90°F)
Best time for diving, snorkeling and boat trips.
Wet season shoulder
November-March · 24-30°C (75-86°F)
Expect occasional rains and rougher seas; fewer tourists and lower prices.

Weather & Climate near Karimunjawa

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 23°C to 32°C. Heavy rainfall (2188 mm/year), wettest in January with a pronounced dry season.

Air Quality: AQI 55 Moderate
Best Time to Visit
AugustSeptemberJuly
Temperature & Rainfall
Temperature Range
30°
Warmest Month
25°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Good 24° - 31° 31° 502 mm overcast 83% 2.7 m/s 2.1 extreme 12.3h
February Acceptable 24° - 31° 31° 369 mm overcast 84% 2.5 m/s 2.3 extreme 12.2h
March Acceptable 24° - 31° 32° 260 mm overcast 82% 2.1 m/s 2.4 extreme 12.0h
April Acceptable 25° - 32° 32° 154 mm overcast 80% 1.7 m/s 2.3 extreme 11.9h
May Good 25° - 32° 33° 135 mm partly cloudy 79% 1.9 m/s 2.0 extreme 11.8h
June Good 24° - 32° 32° 99 mm partly cloudy 79% 2.1 m/s 1.9 very high 11.7h
July Very Good 23° - 32° 31° 64 mm partly cloudy 78% 2.2 m/s 2.0 extreme 11.7h
August Excellent 23° - 32° 30° 37 mm some cloud 77% 2.4 m/s 2.3 extreme 11.8h
September Excellent 24° - 31° 31° 40 mm some cloud 76% 2.6 m/s 2.5 extreme 12.0h
October Very Good 25° - 32° 32° 65 mm partly cloudy 77% 2.1 m/s 2.4 extreme 12.1h
November Acceptable 25° - 31° 32° 141 mm overcast 78% 2.2 m/s 2.1 extreme 12.3h
December Acceptable 25° - 31° 33° 322 mm overcast 82% 2.5 m/s 1.9 very high 12.3h
Getting There & Around

How to Get to Karimunjawa

By ferry: Weekly ferries and faster passenger boats connect Karimunjawa to Jepara (Central Java); the fast boat takes about 3-4 hours depending on sea conditions. By air: Limited charter flights operate seasonally-book ahead if available.

Tips for Visiting Karimunjawa

  • Inter-island boats connect Karimunjawa's main islands - book crossings in advance during peak season (July-August).
  • Bring cash: some island businesses have limited card facilities.
  • Rent a scooter on Karimunjawa (the main island) to access secluded beaches early in the morning before day-trippers arrive.