Ko Lan — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Ko Lan (Chonburi province, Thailand). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Ko Lan help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Ko Lan in the Gulf of Thailand today is 31°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Ko Lan today is lower than both a week ago and a month ago. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Ko Lan will be 30.1°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 2 | 31.6°C | 31.3°C | |
| JUN 3 | 31.7°C | 30.8°C | |
| JUN 4 | 31.5°C | 30.8°C | |
| JUN 5 | 31.4°C | 30.8°C | |
| JUN 6 | 31.2°C | 30.8°C | |
| JUN 7 | 31.2°C | 30.8°C | |
| JUN 8 | 31.0°C | 30.8°C | |
| JUN 9 | 30.9°C | 30.5°C | |
| JUN 10 | 30.5°C | 30.5°C | 30.5°C |
| JUN 11 | 30.5°C | 30.4°C | |
| JUN 12 | 30.3°C | 30.4°C | |
| JUN 13 | 30.5°C | 30.3°C | |
| JUN 14 | 30.3°C | 30.3°C | |
| JUN 15 | 30.3°C | 30.2°C | |
| JUN 16 | 30.0°C | 30.1°C | |
| JUN 17 | 30.8°C | 30.1°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Ko Lan is a small island off the coast of Pattaya in Chonburi province, known for its compact beaches and proximity to the mainland. The surrounding seawater remains warm year-round, typically ranging from about 26°C to 31°C. During the cooler season from November through February, surface temperatures commonly sit around 26°C–28°C. In the hot months of March to May the sea often rises to approximately 29°C–31°C, while the southwest monsoon period from June to October tends to bring temperatures around 27°C–30°C with more variable conditions and occasional short-term cooling during heavy rain events.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 25°C | 27°C | 30°C |
| February | 25°C | 28°C | 30°C |
| March | 26°C | 29°C | 31°C |
| April | 28°C | 30°C | 32°C |
| May | 28°C | 31°C | 32°C |
| June | 28°C | 31°C | 32°C |
| July | 28°C | 30°C | 31°C |
| August | 26°C | 30°C | 31°C |
| September | 28°C | 30°C | 31°C |
| October | 28°C | 30°C | 31°C |
| November | 27°C | 29°C | 31°C |
| December | 26°C | 28°C | 30°C |
* Click on a month to view detailed water temperature data.
Ko Lan: Weather Forecast
June 11
June 12
June 13
Location, Beaches & Local Information
Nearby Beaches & Facilities
Tien Beach
Tawaen Beach
Tong Lang
Samae Beach
Ta Yai Beach
Nual Beach
Pratumnak Beach
Cozy Beach
Mountien Beach
Swimming Conditions
Swimming around Ko Lan is generally pleasant because of the warm water and a number of sheltered bays suitable for bathing and casual snorkeling. Main beaches offer gently sloping sand and easy entry, making them suitable for families and day-trippers; visibility and currents are usually best outside the monsoon months, so November to April is often preferred for clearer water and calmer seas. Equipment rental and boat excursions for snorkeling are widely available, but visitors should remain aware of boat traffic, changing weather, and occasional jellyfish or debris during the rainy season. Lifeguard coverage varies by beach, so sensible precautions and attention to local guidance are recommended for a safe beach holiday.