# Friedrich Reef, Indonesia: what it is and when to go > Friedrich Reef is a reef in Malaysia (Terumbu Kalumpang) in Indonesia. Interests: Beaches and Diving. The best time to visit is April to September. There are about 12 h 15 of daylight all year round: this close to the equator the days barely change. It has an article in one Wikipedia, so it is not one of the busiest places in Indonesia: one to enjoy at a calmer pace. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/asia/indonesia/friedrich-reef/ - Reviewed on: 2026-10-08 - Language: en ## In a nutshell - **What it is:** Reef in Malaysia · Beaches, Diving - **Local name:** Terumbu Kalumpang - **Where:** Indonesia - **Best time:** April to September. - **Nearest airport:** SUB Surabaya, 1,434 km as the crow flies - **Coordinates:** 4.23983, 118.3507 ## What it is and where Friedrich Reef is a reef in Malaysia (Terumbu Kalumpang) in Indonesia. It has an article in one Wikipedia, so it is not one of the busiest places in Indonesia: one to enjoy at a calmer pace. Its coordinates are 4.23983, 118.3507; the nearest main airport is Juanda International Airport (SUB, Surabaya), 1,434 km as the crow flies. How to get around Indonesia (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/asia/indonesia/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=4.239829%2C118.350702) - [Directions](https://www.google.com/maps/dir/?api=1&destination=4.239829%2C118.350702) It is one of the [Beaches](https://kokai.app/en/paises/asia/indonesia/playa/) and [Diving](https://kokai.app/en/paises/asia/indonesia/submarinismo/) places in Indonesia. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go The best time to visit Friedrich Reef is **April to September**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 11 h 47 | | February | Possible | 11 h 52 | | March | Possible | 11 h 58 | | April | Best time | 12 h 06 | | May | Best time | 12 h 12 | | June | Best time | 12 h 15 | | July | Best time | 12 h 13 | | August | Best time | 12 h 08 | | September | Best time | 12 h 01 | | October | Possible | 11 h 54 | | November | Possible | 11 h 48 | | December | Possible | 11 h 45 | There are about 12 h 15 of daylight all year round: this close to the equator the days barely change. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. | What you come for | Best time | Possible | | --- | --- | --- | | Beaches | April to September | October to March | | Diving | April to September | October to March | It is not the same trip whatever you come for: Friedrich Reef has a different season depending on what you want to do here, and [Kokai](https://kokai.app/en/) puts it in the right month for you. When to go to Indonesia in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/asia/indonesia/#cuando-ir). ## Before you go to Indonesia To enter Indonesia there are 10 things to sort out before you leave, starting with “Passport valid for six months and an onward ticket”: they are all, with their deadlines, in [the Indonesia checklist](https://kokai.app/en/paises/asia/indonesia/#antes-de-salir). Currency: Indonesian rupiah (IDR); plugs: Type C and F · 230 V · 50 Hz (the same plug as in Spain); emergencies: 112 for everything · 110 police · 118 ambulance. In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [Terumbu Balung](https://kokai.app/en/paises/asia/indonesia/roach-reefs/): Reef in Malaysia · 8.8 km - [Erzherzog Reef](https://kokai.app/en/paises/asia/indonesia/erzherzog-reef/): Reef in Malaysia · 9.7 km - [Ligitan Reefs](https://kokai.app/en/paises/asia/indonesia/ligitan-reefs/): Reef · 20 km - [Sipadan](https://kokai.app/en/paises/asia/indonesia/sipadan-island-park/): Island in Malaysia · 34 km - [Creach Reef](https://kokai.app/en/paises/asia/indonesia/creach-reef/): Reef · 41 km Distances are as the crow flies. Everything else is in [the Indonesia guide](https://kokai.app/en/paises/asia/indonesia/). ## More in Indonesia: Beaches - [Nusa Dua](https://kokai.app/en/paises/asia/indonesia/nusa-dua-beach/): seaside resort - [Lovina Beach](https://kokai.app/en/paises/asia/indonesia/lovina-beach/) - [Parangtritis](https://kokai.app/en/paises/asia/indonesia/parangtritis-beach/): beach in Bantul, Yogyakarta, Indonesia - [Dreamland Beach](https://kokai.app/en/paises/asia/indonesia/dreamland-beach/): beach in Bali, Indonesia - [Pangandaran](https://kokai.app/en/paises/asia/indonesia/pangandaran-beach/): beach in Indonesia - [Ujong Blang Beach](https://kokai.app/en/paises/asia/indonesia/pantai-ujong-blang/): tourism in Aceh, Indonesia Every Indonesia place under Beaches, each with its season, is on [its page](https://kokai.app/en/paises/asia/indonesia/playa/). ## Frequently asked questions ### What is Friedrich Reef? It is a reef in Malaysia (Terumbu Kalumpang in the local language) in Indonesia. It has an article in one Wikipedia, so it is not one of the busiest places in Indonesia: one to enjoy at a calmer pace. ### When is the best time to visit Friedrich Reef? April to September. There are about 12 h 15 of daylight all year round: this close to the equator the days barely change. ### How do you get to Friedrich Reef? The nearest main airport is Juanda International Airport (SUB), 1,434 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=4.239829%2C118.350702) opens the route on the map, and how to get around Indonesia is explained in [its country guide](https://kokai.app/en/paises/asia/indonesia/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the Indonesia map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [Terumbu Balung](https://kokai.app/en/paises/asia/indonesia/roach-reefs/), [Erzherzog Reef](https://kokai.app/en/paises/asia/indonesia/erzherzog-reef/), [Ligitan Reefs](https://kokai.app/en/paises/asia/indonesia/ligitan-reefs/). The rest is in [the Indonesia guide](https://kokai.app/en/paises/asia/indonesia/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/965240272), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q35705182), CC0. Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).