Water temperature in Koh Ngai in May

Is it warm enough to swim in Koh Ngai in May? Average water temperature in Koh Ngai in May is 30.7°C and therefore suitable for comfortable swimming. The warmest sea in Koh Ngai in May is 32.2°C, and the coldest is 28.3°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Koh Ngai

Changes water temperature in Koh Ngai in May 2025, 2024

To get an accurate forecast for the water temperature in Koh Ngai for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Koh Ngai, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of May.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 May	31°C	31.8°C	29.9°C	31.8°C
2 May	30.9°C	31.7°C	29.4°C	31.7°C
3 May	30.8°C	31.6°C	29.6°C	31.6°C
4 May	30.8°C	31.5°C	29.6°C	31.5°C
5 May	30.7°C	32.2°C	29.7°C	32.2°C
6 May	30.7°C	32°C	29.1°C	32°C
7 May	30.8°C	31.7°C	29.4°C	32°C
8 May	30.7°C	32.1°C	29.7°C	32.1°C
9 May	30.7°C	32°C	29.7°C	32°C
10 May	30.5°C	31.8°C	29.7°C	31.8°C
11 May	30.6°C	31.8°C	29.7°C	31.8°C
12 May	30.3°C	31.7°C	29.9°C	31.8°C
13 May	30.6°C	31.5°C	29.8°C	31.8°C
14 May	30.7°C	31.8°C	30°C	31.9°C
15 May	30.7°C	32.1°C	30.2°C	32.1°C

Day	2025	2024	Min	Max
16 May	30.9°C	32.1°C	30.3°C	32.1°C
17 May	30.3°C	31.9°C	29.9°C	32.1°C
18 May	30.3°C	31.7°C	29.7°C	31.8°C
19 May	30.3°C	31.6°C	29.4°C	31.8°C
20 May	30.2°C	31.4°C	29.4°C	31.6°C
21 May	30.1°C	31.2°C	29.2°C	31.4°C
22 May	30.1°C	31.1°C	29.6°C	31.5°C
23 May	30°C	31°C	29.6°C	31.1°C
24 May	29.9°C	31.2°C	29.4°C	31.2°C
25 May	29.9°C	31.1°C	29.4°C	31.1°C
26 May	29.9°C	31.4°C	29.1°C	31.4°C
27 May	29.8°C	31.3°C	29.1°C	31.3°C
28 May	29.9°C	31.3°C	29.4°C	31.3°C
29 May	30°C	31.3°C	28.9°C	31.3°C
30 May	30°C	31.2°C	28.3°C	31.4°C
31 May	30.6°C	31.1°C	28.7°C	31.6°C

Average water temperature in Koh Ngai in May over a decade

2016	2017	2018	2019	2020
31.3°C	30.9°C	30.6°C	30.5°C	30.8°C

2021	2022	2023	2024	2025
30.6°C	30.7°C	30.9°C	31.6°C	30.4°C

Koh Ngai water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in May. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Ko Phi Phi Don	30.5°C	27.8°C	32.2°C
Phi Phi Islands	30.4°C	27.7°C	32.2°C
Krabi	30.5°C	27.8°C	32.4°C
Railay Beach	30.5°C	27.7°C	32.4°C
Ao Nang	30.5°C	27.7°C	32.3°C
Ban Ao Nang	30.5°C	27.7°C	32.1°C
Ko Racha Yai	30.3°C	27.9°C	31.9°C
Cape Panwa	30.4°C	27.8°C	31.9°C
Phuket	30.3°C	27.8°C	31.8°C
Ban Talat Yai	30.4°C	27.8°C	32°C

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Our report for Koh Ngai is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature