Defensible only first half. Latter half slides into wet-season territory with poor reliability.
November marks the wet season's onset — 160mm rain across 12 days, snorkel visibility drops to 14-18m, boat reliability decreases (10-15% cancellation rate). Crowds remain very low (30-60/day). Pricing returns to low-season territory mid-month. Last shoulder window before December's heavy wet season. Defensible only with weather flex.
# Gili Nanggu in November: Wet Season Onset
November is the month wet season returns to the Secret Gilis. The transition isn't sharp — early November still feels like late October — but by month-end the rainfall pattern, sea state, and visibility have all shifted into wet-season territory.
This is the year's last shoulder window before December's heavy wet season. Worth visiting in the first half if you want quiet plus reasonable conditions; a gamble in the second half.
Rainfall jumps significantly from October:
Rainfall: 160mm across 12 days, doubling October's 80mm. Daily afternoon showers become longer and more reliable.
Visibility: Drops to 14-18m. River runoff from Lombok's southwest rivers begins. Coral colors muted.
Sea state: Calmer mornings still possible. Afternoon swells build as the year progresses. Late-month occasional storm systems.
Temperature: 32°C daytime, 24°C overnight. Humidity climbs to 78%.
Crowds: 30-60 visitors per day. Quietest of any month except wet-season January-February.
The month splits sharply:
Nov 1-15: Late-October-like. Brief afternoon showers, 16-18m visibility, boats reliable, occasional zero-rain days. Defensible for visits.
Nov 16-30: Wet season established. Longer rain events, 14-16m visibility, boat cancellations climb to 15-25%, occasional all-day rain. Gamble territory.
If your November dates are flexible, target Nov 1-12. If they're locked in late month, build flex.
November is the year's best value window for travelers willing to accept some weather risk:
Two-person day trip total: 800k-1m IDR.
Two-person overnight package: 1.5-2m IDR.
For comparison, the same package in mid-July runs nearly double.
November is the calm before the Christmas/New Year storm. December 20 onward sees pricing ratchet up dramatically and crowds spike again. November's window is genuinely quiet across all dimensions:
If you want emptiness without committing to deep wet-season January, November delivers.
November snorkeling sits in the "acceptable but not great" zone. Visibility of 14-18m makes the fish-feeding jetty area still rewarding — sheltered water keeps clarity better than the open reef. The broader 4-island circuit feels muted compared to peak.
The fish themselves are still present. Coral is still there. Just less dazzling than September-October.
If snorkel quality is your single priority, November is wrong. If snorkeling is one of several activities and you want it cheap and quiet, November works.
The first half of November maintains good boat reliability (90%+ on time). The second half sees cancellation rates climb to 15-25% as afternoon storms build.
Pattern through the month:
If you book late-month, target the early morning crossings exclusively. Don't try afternoon returns.
November is when bioluminescence reliability ends for the year. Several factors:
Success rate on November new-moon nights: 30-40%. Not worth structuring a trip around.
The next reliable bioluminescence window opens in May.
Late November sees Nanggu Cottages restaurant operate with reduced supply deliveries. Mainland boats supplying the cottages with fresh produce and proteins run less reliably as weather deteriorates.
Practical implications:
This isn't a crisis — the cottage still serves meals — but expect simpler offerings.
November Gili Nanggu suits:
November is wrong for:
For travelers comparing November versus December, November wins clearly — December is wetter, choppier, and much more expensive in the late month due to Christmas/NYE surge. November offers the wet-season trade-off without the holiday premium.
For travelers comparing November versus April (similar shoulder positioning), April beats November on reliability and conditions, while November beats April on price and emptiness. Choose based on priority.
First half of November (Nov 1-15) is the best window — wet season hasn't fully established and you get late-October-like conditions at falling prices. After Nov 15, weather destabilizes faster. Avoid the late-November to early-December window unless you have 4+ days of itinerary flex to absorb cancellations.