Hua Hin Rain Outlook: A Second Wave Lands on Loy Krathong

Hua Hin has been dry through the worst of this week’s southern deluge. ThaiWater’s gauges at Hua Hin, Nong Kae and Thap Tai read zero in the 24 hours to 5am today, and the highest in the whole district was 2.6 mm at Huai Sat Yai. Forecasters now say that luck is thinning. Heavy rain is expected in Prachuap Khiri Khan tomorrow. The Department of Disaster Prevention and Mitigation (DDPM) also expects a second wave from 20 to 24 November, which takes in Loy Krathong night on Tuesday 24 November.

Two warnings, one holiday

The Thai Meteorological Department (TMD) issued its eighth southern advisory today, No. 306/2026. It forecasts isolated heavy to very heavy rain across the south on 12 and 13 November, with flash floods and run-off possible near foothills and waterways. Gulf waves are expected at two to three metres in the lower Gulf and above three metres under thunderstorms, and small boats are told to stay ashore.

Earlier in the week TMD named Prachuap Khiri Khan and Phetchaburi among the provinces due heavy rain on Friday 13 November, The Nation reported. Hua Hin was not named individually.

The longer outlook comes from the DDPM. At a meeting in Hat Yai on 11 November, its director-general warned of heavy to very heavy rain on 11 to 13 November. Governors of 14 southern provinces attended, along with those of Phetchaburi and Prachuap Khiri Khan. He expects a second spell on 20 to 24 November, Bangkok Biz News reports, and an easing in mid-December. The department ordered storm drains dredged to 100 percent in 16 provinces and told officials to plan early evacuation of vulnerable groups.

Window	Who says	What it says
12–13 Nov	TMD advisory 306/2026	Heavy to very heavy rain in the south, Gulf waves 2–3 m
Fri 13 Nov	TMD, via The Nation	Heavy rain named for Prachuap Khiri Khan and Phetchaburi
20–24 Nov	DDPM, 11 Nov meeting	Second wave of heavy rain in the south
Mid-December	DDPM	Rain expected to ease

Why Hua Hin keeps missing the worst

The gauge data shows a steep gradient. Rain is heavy from Bang Saphan southwards and fades quickly towards Hua Hin, which sits near the northern edge of the Prachuap coast. That matches the pattern in our earlier reports on the 7 to 9 November warning and where the rain fell on 10 November, when listed days brought little to the town.

Chart: Hitkub. Data from ThaiWater (Hydro-Informatics Institute) rain gauges, 24 hours to 05:00 on 12 November 2026. Each bar is the highest single gauge in the district.

Two cautions apply. A forecast eight to twelve days out is an outlook, not a warning, and we found no TMD province-level warning for 20 to 24 November yet. Gauges also record where rain fell, not where it will fall: a band that tracks a little further north would change Friday’s picture quickly.

What it means for Loy Krathong

Rain is a bigger problem for a night of floating candles than for most holidays. Rough seas, like the two to three metre waves forecast for tomorrow, also make the sea a harder place to launch one. We found no announcement from Hua Hin Municipality about beach arrangements or a wet-weather plan, so check its notices closer to the date. Hotels that have published plans are mostly covered. Cape Nidhra Hua Hin runs krathong making from 3pm and a poolside cocktail hour and buffet, at ฿1,390 net per person, according to a Cape & Kantary release. Hua Hin Marriott serves its buffet at Amber Kitchen at ฿1,399++ for adults, Travel Daily Media reports. The Standard’s “A Krathong Kind of Night” starts at 5pm with Thai music in the courtyard, then a set menu and a free bread krathong at Praça.

For tomorrow, the practical advice is plain. Treat outdoor plans on Friday as weather-dependent, check TMD’s bulletins, which it updates through the day, and give any drive south towards Bang Saphan extra time. Our earlier report on Prachuap flooding covers the roads. For Loy Krathong, the next signal to watch is whether TMD’s warnings begin to name Prachuap Khiri Khan for 20 November onwards.