Semau Island surf

Semau Island

Intermediate
Reef break · Moderate · Best: May–October · All tides
Working best in Timor now Kolbano Good · 0.8m @ 10s View →
Conditions right now
Poor–Fair
Wave
0.5m
Swell
0.3m
11s · WSW
Period
11s
Wind
13 km/h
SE · gust 23
Cross-shore
Water
27°C
Air
26°C

Surf report

Tide falling · Low 1:00 AM 0.3m
Time Surf Swell Wind Tide
6 AM 0.4 m
0.3m 11s WSW
11 km/h off
1.0m
9 AM 0.4 m
0.3m 10s WSW
8 km/h off
1.0m
12 PM 0.4 m
0.3m 10s WSW
22 km/h on
0.1m
3 PM 0.5 m
0.3m 10s WSW
22 km/h cross
-0.5m
6 PM 0.5 m
0.3m 10s WSW
20 km/h cross
0.2m
Best session today
8 AM–10 AM
Offshore 0.3m swell @ 10s

Next 24 hours

Wave Swell
0.0 0.8 1.5 12 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Wind

Speed Gusts (km/h)
0 30 60 12 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Tide

Low 1:00 AM · 0.3m High 7:00 AM · 1.1m Low 3:00 PM · -0.5m High 9:00 PM · 0.9m
L 1 AM H 7 AM L 3 PM H 9 PM L 3 AM H 9 AM L 3 PM H 10 PM 12 AM6 AM12 PM6 PM12 AM6 AM12 PM6 PM

7-day outlook

Best days
Tue, Sep 8
0.4–0.5m
Wed, Sep 9
0.4–0.5m
Thu, Sep 10
0.4–0.8m
Fri, Sep 11
0.5–0.7m
Sat, Sep 12
0.5–0.6m
Sun, Sep 13 Best
0.5–0.7m
Mon, Sep 14
0.6–0.8m

Hourly detail

Show next 24h
Time Wave Swell Period Wind Tide
12 AM 0.5m 0.3m WSW 11s 13 SE cross 0.4m
1 AM 0.5m 0.3m WSW 11s 13 SE cross 0.3m
2 AM 0.5m 0.3m WSW 11s 11 SE cross 0.3m
3 AM 0.5m 0.3m WSW 11s 12 SE cross 0.4m
4 AM 0.5m 0.3m WSW 11s 12 SE cross 0.6m
5 AM 0.5m 0.3m WSW 11s 12 ESE off 0.8m
6 AM 0.4m 0.3m WSW 11s 11 ESE off 1.0m
7 AM 0.4m 0.3m WSW 11s 13 ESE off 1.1m
8 AM 0.4m 0.3m WSW 10s 11 ESE off 1.1m
9 AM 0.4m 0.3m WSW 10s 8 E off 1.0m
10 AM 0.4m 0.3m WSW 10s 1 NE off 0.8m
11 AM 0.4m 0.3m WSW 10s 9 SW on 0.5m
12 PM 0.4m 0.3m WSW 10s 22 S on 0.1m
1 PM 0.4m 0.3m WSW 10s 28 S cross -0.3m
2 PM 0.5m 0.3m WSW 10s 23 S cross -0.5m
3 PM 0.5m 0.3m WSW 10s 22 SSE cross -0.5m
4 PM 0.5m 0.3m WSW 10s 20 SSE cross -0.4m
5 PM 0.5m 0.3m WSW 10s 19 SSE cross -0.2m
6 PM 0.5m 0.3m WSW 10s 20 SSE cross 0.2m
7 PM 0.5m 0.3m WSW 10s 17 SSE cross 0.5m
8 PM 0.5m 0.3m WSW 10s 17 SSE cross 0.8m
9 PM 0.5m 0.3m WSW 9s 16 SE cross 0.9m
10 PM 0.5m 0.3m WSW 9s 15 SE cross 0.9m
11 PM 0.5m 0.3m WSW 9s 13 SE cross 0.8m

About Semau Island

Semau Island, a short crossing from Kupang, offers approachable reef breaks that are a step up from the beach without being overly intimidating. The waves tend to be moderately sized and relatively predictable, giving intermediate surfers room to develop their reef skills and tube-reading in a relaxed setting. The island has a laid-back pace and the water is warm and clear year-round. It's a solid option for surfers ready to graduate from sand-bottom waves and explore Timor's quieter coastline.

Local knowledge

Hazards

The reef is shallow at low tide with sharp coral and scattered sea urchins — reef booties are strongly recommended and wipeouts should be treated with respect. A moderate channel current can push you down the reef on bigger swells, so pick a clear exit point before paddling out. Boat traffic from the Kupang crossing lane is a background hazard; stay aware when paddling out wide.

Getting there

Take a short boat charter or local ferry from Tenau Harbour or the Kupang waterfront across the Semau Strait (roughly 20–30 minutes). Land at the village on the north side of the island and ask locals to point you toward the reef — there's no formal surf infrastructure, so a local guide or knowledgeable boat captain is a real asset for finding the best entry channel. Enter and exit via the deeper water channel to the side of the breaking wave; avoid scrambling directly over dry reef.

Board

A versatile shortboard or a mid-length funboard (7'0"–7'6") covers most conditions here — the waves are moderate and forgiving enough for progression without demanding a specialist shape. On smaller, mushier days a fish or hybrid will help generate speed; if a larger south swell pushes through, step up to a slightly fuller shortboard with extra volume for confidence on the reef.

Localism

mellow — relaxed vibe.

Where to go now

Semau Island vs. nearby, live
Spot Surf Swell Wind Now
Semau Island
this spot
0.5m
0.3m 11s
13 cross
Poor–Fair
10 km away
0.5m
0.2m 10s
16 cross
Poor–Fair
11 km away
0.5m
0.3m 10s
20 cross
Poor
14 km away
0.7m
0.5m 11s
20 cross
Poor–Fair

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Surfing in Timor

Full Timor surf guide →

Timor sits at the far southeastern end of the Indonesian archipelago, in the province of Nusa Tenggara Timur (NTT), sharing the island with the independent nation of Timor-Leste. For surfers, it's the gritty, frontier alternative to Bali's polish — a place where you trade comfort and crowds for empty line-ups, raw landscapes and genuine exploration.

✈️Getting there

The gateway is Kupang's El Tari Airport (KOE), with regular domestic flights from Bali (Denpasar) — around 1.5 hours — and connections via Jakarta, Surabaya and Labuan Bajo. Some smaller carriers link Kupang to the outer islands.

🛵Getting around

On Timor itself, scooter and motorbike rental is the most flexible way to reach spots like Tablolong, Oetune and Kolbano — though Kolbano is a serious drive (several hours east of Kupang). Cars with a driver are widely available in Kupang and worth it for longer hauls or if you're hauling boards and gear.

🌤️Climate & season

Timor has one of the most pronounced dry seasons in Indonesia, sitting in a rain-shadowed, savanna-like corner of NTT. The dry season runs roughly May to October — and this is also prime surf time, when consistent southeast trade winds groom the swells and rainfall is minimal.