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Demand drops to 30-35 across two of the rainiest months on the Bali calendar, with February averaging 29 rain days and January 25. Highs hold at 30°C year-round, but afternoon downpours land daily and the Indian Ocean swell makes Nusa Islands ferry crossings rough. Rates fall to their wet-season floor, and Ultra-tier inventory is wide open, with Veluvana Bali, Uluwatu Surf Villas and Ulu Cliffhouse all showing genuine availability inside two weeks. For travelers prioritizing budget and uncrowded temples over swimmable conditions, this is the cheapest window for Bali.

March demand reaches 35 with 26 rain days, but the month''s defining planning fact is Nyepi (Day of Silence), a 24-hour island-wide shutdown. Nyepi falls on a different date each year (Saka lunar calendar), shuts down all flights and ferries, and prohibits guests from leaving hotel grounds after dark. Plan around it specifically: arrive 48 hours before to settle, or arrive immediately after to capture cleaner air, emptier beaches and the post-Nyepi tourism dip. Hotels stay fully open through Nyepi but prohibit external movement, including taxi rides; verify your hotel''s specific Nyepi policy before booking arrival flights.

Demand climbs from 50 in April to 55 in May as European travelers begin booking Bali''s dry-season anticipation, but rain holds at 26-27 days monthly. Highs stay at 29°C, slightly cooler than the year-round 30°C average, and afternoon thunderstorms remain reliably daily. Inventory remains broad, with South Bali (Uluwatu Surf Villas, Ulu Cliffhouse) and Ubud properties showing 3-4 weeks of lead time for Ultra-tier rooms during these months. The sweet spot for travelers who want lower rates and lower crowds without committing to peak-rain January-February conditions.

June demand reaches 65 as the dry-season narrative starts pulling bookings, with 20 rain days the lowest reading until August. Highs drop to 28°C from the year-round 30°C average, making June physically comfortable in a way July and August aren''t with their school-holiday density. Mid-June begins to tighten on Ubud and South Bali Ultra-tier inventory; Veluvana (5 rooms) and Ulu Cliffhouse (7 rooms) require 6-8 weeks of lead time at this point. The Gili Islands ferry crossings calm down compared to the wet-season swell, making BASK Gili Meno and similar Gili properties practical for the first time since November.

Demand hits 85 in July and 100 in August, with European summer holidays landing first and Australian school holidays layering on top to push the year''s annual peak. Rain drops to 17 days in August, less than December''s 29 but still a wet month by any tropical-destination standard; afternoon storms happen, just less reliably. Ultra-tier scarcity tightens hard, with Veluvana (5 rooms), Ulu Cliffhouse (7 rooms) and Uluwatu Surf Villas (10 rooms) all requiring 4-5 months of lead time across both months. Pricing peaks alongside demand, so direct-booking discounts disappear; Bali''s peak-season inventory rewards only travelers who lock dates four-to-five months ahead.

September demand drops to 80 as European school terms restart, with 20 rain days matching June''s pre-peak figure and crowds noticeably easing across South Bali. Highs return to 29°C, warm but not hot, and the post-Aussie-holiday slowdown reopens direct-channel availability that was locked through July and August. The Gili Islands and Nusa Islands run smooth crossing conditions through September, before the November rain returns to disrupt schedules. September is widely under-rated, with the same dry-season weather as August at noticeably lower rates and notably thinner crowds.

October demand drops to 60 and rain climbs to 22 days, the first month back into wet-season territory after the dry-season run. Highs return to 30°C, Bali''s standard year-round reading, and the South Bali surf swell holds for a few more weeks before the western monsoon arrives. Rates step down from August-September levels but remain above the deep-low January-February floor; direct booking gets you the visible discount. Last functional shoulder window before NOV-DEC rain settles in, so target the first three weeks for dry-side experience without peak-pricing structure.

November demand drops to 45 as the wet season arrives in earnest, with 27 rain days and afternoon thunderstorms becoming the daily pattern again. Highs hold at 30°C, but humidity spikes and outdoor activity windows compress to morning hours before the daily 2pm storm cycle locks in. Inventory opens broadly across all sub-regions; Ubud and North Bali (Munduk Moding Plantation) become particularly accessible as elevation-dependent travelers thin out. Cheap, quiet and event-free, with budget travelers willing to plan around showers getting genuine Ultra-tier inventory at near-bottom rates.

December demand reads 40, slightly below November''s 45 despite the Christmas/NYE pressure window concentrated in the final two weeks of the month. Rain peaks at 29 days, matching February''s high, and the Indian Ocean swell makes Nusa and Gili crossings rough through year-end. The 12-day NYE booking corridor (December 23 to January 4) locks down Ultra-tier inventory across South Bali and Uluwatu six-to-eight months ahead. Outside that twelve-day window, Bali reads like a typical wet-season month: cheap, quiet, with planning-around-showers required and broad Ultra-tier availability.