Phuket and Andaman Sea Forecast: 23 to 29 June 2025
The Phuket and Andaman Sea forecast below covers 23 Jun to 29 June, 2025, and is published to help you plan ferry, bus, minivan and private transfer travel around the region during the southwest monsoon. Sea state changes quickly at this time of year, so treat the outlook as guidance and confirm departures with your operator on the day.
Weather Forecast for the Andaman Sea Region, Thailand. 23 Jun to 29 June, 2025.
- June 23 (Monday) Temperature: 26 to 28 C. Weather: Light showers. Waves: 2.5 to 3 meters. Sailing Conditions: Moderate to rough, avoid thunderstorm zones. Tides: Low 12:16 am (0.52 m), High 6:49 am (2.10 m)
- June 24 (Tuesday) Temperature: Around 27 C. Weather: Spotty showers, some sunshine. Waves: 2 to 2.5 meters. Sailing Conditions: Moderate, suitable for larger boats. Tides: Low 1:14 am (0.46 m), High 7:43 am (2.20 m)
- June 25 (Wednesday) Temperature: 26 to 28 C. Weather: Scattered rain. Waves: 2 to 3 meters. Sailing Conditions: Choppy, small craft should use caution. Tides: Low 2:06 am (0.41 m), High 8:32 am (2.27 m)
- June 26 (Thursday) Temperature: 26 to 28 C. Weather: Showers and isolated thunderstorms. Waves: 2.5 to 3.2 meters. Sailing Conditions: Rough, avoid sailing during storms. Tides: Low 2:54 am (0.39 m), High 9:18 am (2.30 m)
- June 27 (Friday) Temperature: Around 27 C. Weather: Rain showers. Waves: 2.5 to 3.5 meters. Sailing Conditions: Very rough, sailing not advised. Tides: Low 3:39 am (0.41 m), High 10:02 am (2.28 m)
- June 28 (Saturday) Temperature: Around 27 C. Weather: Light rain with occasional sunshine. Waves: 2 to 2.8 meters. Sailing Conditions: Moderate, short routes may be possible. Tides: Low 4:22 am (0.46 m), High 10:43 am (2.23 m)
- June 29 (Sunday) Temperature: 26 to 28 C. Weather: Showers, cloudy. Waves: 2 to 3 meters. Sailing Conditions: Unstable, check marine warnings before departure. Tides: Similar pattern expected, with two highs and two lows during the day
Disclaimer: Weather, sea conditions, and tide information are subject to change. Always check local updates and forecasts before planning activities.
What changed this week
Wave heights build through the middle of the week, peaking at 2.5 to 3.5 meters on Friday 27 June, when sailing is not advised. Monday and Thursday bring thunderstorm risk, while Tuesday and Saturday are the calmest windows at 2 to 2.5 and 2 to 2.8 meters. Temperatures stay steady at 26 to 28 C throughout, so rain and swell, not heat, are what shape your travel plans.
Who is affected
Rough seas mainly affect small craft, speedboats and longtail boats; larger vessels are better suited to the moderate days. Travellers heading to island destinations are most exposed, while road-based bus, minivan and private transfer journeys are affected by heavy rain and slower driving conditions rather than swell.
Practical impact for travellers
Build slack into your itinerary. Avoid booking a same-day onward flight after a sea crossing during the 26 to 27 June window, keep bags dry, and sit mid-vessel if you are sensitive to motion. Cancellation and rebooking terms vary by operator, so read the conditions shown at checkout before you pay.
Plan around the sea state
Use the calmer days for longer open-water legs and keep short hops or overland options in reserve for rough days. Compare travel dates and available services on our Phuket travel and transport page, then check onward connections such as Phuket to Krabi to see which departures are running.
Note: operators, departure times, durations and prices for this week are not confirmed in this forecast data — check live results for current availability.
Search availability for your dates and book the departure that fits the forecast.
