Sea conditions

Lombok Strait

The deep gap between Bali and Lombok, where the Indonesian Throughflow drains the Pacific into the Indian Ocean. Rarely flat, and never for long.

1,462 days measured

Calmest monthsNovember, April, December
Roughest monthsJuly, August, June

Month by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Lombok Strait — 1,462 days measured
Month Sea Wave Wind Easy days Rough days
January Mixed 1.48 m 18 km/h 19% 6%
February Mixed 1.51 m 18 km/h 21% 5%
March Mixed 1.54 m 15 km/h 22% 1%
April Mixed 1.51 m 15 km/h 24% 2%
May Mixed 1.52 m 18 km/h 15% 1%
June Hard 1.74 m 19 km/h 9% 7%
July Hard 1.82 m 20 km/h 2% 8%
The southeast monsoon at full strength. Two days in a hundred are easy.
August Hard 1.84 m 19 km/h 5% 8%
September Hard 1.71 m 18 km/h 6% 3%
October Mixed 1.62 m 16 km/h 10% 3%
November Easy 1.32 m 14 km/h 38% 0%
The calmest month of the year by a wide margin — 38% of days are genuinely easy, against 2% in July.
December Mixed 1.44 m 17 km/h 23% 3%

How this was measured

Every number on this page comes from four years of Open-Meteo marine and ERA5 reanalysis at a fixed point in this sea area, aggregated by calendar month. A month is called easy, mixed or hard by how many of its days are genuinely comfortable to be out on — not by a single day’s safety verdict, which classifies most days in most months the same way and tells you nothing about the year.

Sail it in the right month

Our captains work this water all year and know which weeks it rewards.

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Other sea areas

Badung Strait & Nusa Penida Calmest months: November, March, April North Lombok & the Gilis Calmest months: April, June, November Bali Strait & north Bali Calmest months: April, May, June South Bali & Indian Ocean Calmest months: November, February, March North Bali (Bali Sea) Calmest months: November, October, April Komodo & Flores Sea Calmest months: November, December, March