Phuket and Andaman Sea forecast at a glance
This Phuket and Andaman Sea forecast covers the week around the middle of April 2025, when the region moves from the dry season into the first reliable rains of the year. Expect warm days in the high twenties to mid thirties, a mix of cloud and passing showers, and sea conditions that stay workable for most of the week.
The short version: showers come and go rather than settling in, mornings are generally the calmest part of the day, and conditions improve towards the weekend.
Weather Forecast for the Andaman Sea Region, Thailand. April 14-20, 2025.
Tuesday, April 15
- Temperature: 27-33°C
- Weather: Cloudy with a thunderstorm
- Sea Conditions: Slightly choppy during showers
- Tide: High at 10:05 (2.25m), low at 16:19 (0.38m)
Wednesday, April 16
- Temperature: 27-32°C
- Weather: Cloudy with occasional rain
- Sea Conditions: Generally calm, waves ~1m
- Tide: High at 10:39 (2.26m), low at 16:54 (0.37m)
Thursday, April 17
- Temperature: 27-32°C
- Weather: Cloudy with light rain
- Sea Conditions: Smooth with mild swell
- Tide: High at 11:13 (2.27m), low at 17:29 (0.35m)
Friday, April 18
- Temperature: 27-33°C
- Weather: A bit of morning rain, mostly cloudy
- Sea Conditions: Favorable for sailing
- Tide: High at 11:47 (2.28m), low at 18:04 (0.34m)
Saturday, April 19
- Temperature: 27-34°C
- Weather: Periods of rain
- Sea Conditions: Good, caution during downpours
- Tide: High at 12:21 (2.29m), low at 18:39 (0.33m)
Sunday, April 20
- Temperature: 28-34°C
- Weather: Mostly cloudy with brief afternoon rain
- Sea Conditions: Ideal for boating and water sports
- Tide: High at 12:56 (2.30m), low at 19:14 (0.32m)
How the week develops
Tuesday is the most unsettled day, with a thunderstorm and slightly choppy water during showers. From Wednesday onward the sea steadies: waves of around a metre, then a smooth surface with mild swell on Thursday.
Friday is described as favorable for sailing once the morning rain clears, Saturday stays good with caution advised during downpours, and Sunday is the pick of the week - ideal for boating and water sports, with the warmest reading of the period at 28-34°C.
What it means for your journey
Sea travel in the Andaman is affected more by wind and swell than by rain itself, so a cloudy or showery day does not usually stop boats running. Crossings can still feel bumpier during a squall, and operators may adjust, delay or cancel departures if conditions deteriorate - so keep contact details to hand and allow a buffer before onward flights or connections.
Land transport is less exposed. Buses, minivans and private transfers run through rain, though heavy downpours can slow road journeys and lengthen pick-up windows.
Using the tide times
High tide shifts roughly half an hour later each day this week, from 10:05 on Tuesday to 12:56 on Sunday, with lows around 0.3-0.4m in the late afternoon and evening. At shallow beach piers, low water can mean wading to a longboat or a short tender transfer, so lighter luggage and shoes you can get wet are worth planning for.
Plan around the forecast
- Book morning departures where possible - showers here often build later in the day.
- Pack a light rain layer and a dry bag for phones, tickets and documents.
- If you are prone to seasickness, favour Wednesday to Sunday over Tuesday.
- Check your ticket's change and refund conditions before you travel.
Popular Andaman connections from Phuket
Compare timetables and seat types on the region's busiest links: Phuket to Phi Phi ferries, Phuket to Krabi services and Phuket to Koh Lanta connections. For overland options and door-to-door pick-ups, see our Phuket travel and transfer guide.
Disclaimer: Weather, sea conditions, and tide information are subject to change. Always check local updates and forecasts before planning activities.
Ready to travel?
Pick your dates, compare departures across ferries, buses, minivans and private transfers, and book in a few minutes. Search availability for your Andaman route now.
