Komodo weather runs on two monsoons: the wet, rough west
monsoon from December to March and the dry, windy east monsoon from June
to August — with the calmest seas in the transition months of April–May
and September–November. Air temperature barely moves all year
(30–33°C by day), so the real question is never “will it be warm?” It is
“will the crossing be calm?” This page answers that, month by month,
from the deck rather than from a climate database.
I am Jo Rangga. Since 2016 I have logged the sea state of every one
of my 300+ Komodo departures — wind direction, swell height at the Linta
Strait, whether we had to resequence the day. That log, checked against
the official marine forecasts from BMKG, Indonesia’s meteorology agency
(maritim.bmkg.go.id), is what the table below is built on. It is also
the data behind how we sequence the 5-day Komodo
itinerary — which sites we visit at dawn, and which we keep for
sheltered afternoons.
The 2027 Komodo weather
table
| Month | Wind | Typical swell (exposed crossings) | Rain days | Water temp | Crossing verdict |
|---|---|---|---|---|---|
| January | W–NW, strong | 1.5–2.5 m | 12–16 | 28–29°C | Rough. Expect reshuffles. |
| February | W–NW, strong | 1.5–2.5 m | 11–15 | 28–29°C | Roughest month on our logs. |
| March | W, easing | 1.0–1.5 m | 8–12 | 28–29°C | Improving week by week. |
| April | Light, variable | 0.5–1.0 m | 4–7 | 28°C | Calm. Transition begins. |
| May | Light E | 0.3–0.8 m | 2–4 | 27–28°C | Calmest reliable month. |
| June | E–SE, building | 0.5–1.2 m | 1–2 | 26–27°C | Calm mornings, breezy afternoons. |
| July | SE, strong | 0.8–1.5 m (south sites) | 0–1 | 25–26°C | Dry and windy; north stays workable. |
| August | SE, strong | 0.8–1.5 m (south sites) | 0–1 | 25–26°C | Same pattern as July. |
| September | SE, easing | 0.5–1.0 m | 1–2 | 26°C | Calming fast. Excellent. |
| October | Light, variable | 0.3–0.8 m | 2–4 | 27°C | Glassy mornings. Excellent. |
| November | Light W late | 0.5–1.0 m | 5–9 | 28°C | Good early; first squalls late. |
| December | W, building | 1.0–2.0 m | 10–14 | 28–29°C | Mixed; holiday weeks are a gamble. |
Figures are typical ranges for the exposed crossings (Labuan
Bajo–Padar and the Linta Strait), not the sheltered anchorages, which
are calmer in every month.
Why the wind matters
more than the rain
First-time planners fixate on rain. On this route, rain is a minor
character: even in January it usually falls as short, hard squalls with
sunshine between them. What actually changes your trip is wind
and the swell it builds, because a 5-day plan crosses open
water on four of five mornings.
- Over about 1.2 m of swell, the smaller day boats
stop being comfortable, and we slow the phinisi down — a 2-hour leg
becomes 3. - Over about 1.8–2.0 m, harbourmaster port clearances
in Labuan Bajo can be delayed or refused for smaller vessels, and we
re-route to the sheltered inner islands. - Below 0.8 m — which is most mornings from April to
October — everything on the published route runs exactly on
schedule.
This is also why “Komodo weather” advice that only quotes air
temperature is useless. It is 31°C in February and 31°C in August. The
two months could not sail more differently.
The monsoon logic, in one
minute
The west monsoon (Dec–Mar) pushes moist air from the
Asian continent across the Flores Sea: squalls, westerly swell into the
park’s exposed western sites, and nutrient-rich water. That plankton is
why manta sightings peak exactly when the seas are worst — nature’s
honest trade-off.
The east monsoon (Jun–Aug) does the opposite:
bone-dry Australian air, cloudless weeks, cooler water (bring a 3 mm
wetsuit or a long-sleeve rash guard for repeated snorkels — 25°C feels
cold by the third swim), and a strong south-easterly that hammers the
park’s southern sites after late morning.
The transitions (Apr–May, Sep–Nov) are when neither
monsoon has grip: light winds, flat dawns, and the best average
visibility of the year, 25–30 m on the outer reefs.
How weather
changes the 5-day route in practice
A few real adjustments from my departure logs, so you know what
“flexible itinerary” actually means:
- July–August: we move Manta Point and the southern
snorkels to 07:00–10:30 and spend afternoons in the lee at Kanawa or
Kelor. No sites are lost; the clock just shifts. - December–February: we hold a floating half-day
buffer on Day 4. In about one departure in three it gets used. Padar
sunrise moves to whichever morning the forecast is flattest. - Any month: the crossing out of Labuan Bajo is
calmest at 05:00–08:00. This is why our Day 1 starts early and why
sleeping aboard beats commuting from a hotel — a point I break down
honestly across boat classes elsewhere on this site.
What to pack, weather-wise
Light quick-dry clothing all year; a windproof shell for the foredeck
June–August; reef-safe sunscreen every month (UV index is 10+
year-round); a light rain shell only November–March. Seas aside, you
will never be cold on land in Komodo.
Plan around the weather,
not against it
The route is fixed; the sequencing is not. Give me your travel month
and I will tell you exactly how the plan runs in that window — which
mornings we cross, where the buffer sits, and whether your dates fall in
a week I would honestly rather move. Start with the trip overview and 2027 departures on
the homepage, then send your dates through the inquiry page or WhatsApp
me at wa.me/6281139414563 — I
check the BMKG marine bulletin every morning at 06:00 and will give you
a straight answer about your week.
Source: BMKG (Badan Meteorologi, Klimatologi, dan Geofisika)
maritime weather services for the Flores Sea (maritim.bmkg.go.id),
combined with 5 Day Komodo Trip departure logs, 2016–2026.