Ko Samui in April usually sees fair weather conditions, with an average daily high temperature of +81°F and roughly 3 sunny days. However, you should prepare for about 12 rainy days with an average precipitation of 86 mm. The weather is changeable so pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+81°F
Avg. max. temperature
+70°F
Min.
+91°F
Max.
86 mm
Total precipitation
78%
Avg. humidity
2 m/s
Avg. wind
3 ☀️
Sunny Days
6 ⛅️
Cloudy
12 🌦
Rainy
Our opinion: Ko Samui has OK weather in April.
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Average temperature in Ko Samui in April
Here are the expected maximum, average and minimum temperatures in Ko Samui for April based on the historical data.
Last Year
Historical Data
The temperature in April is +82°F on average, with a range between a maximum of +84°F during the day and a minimum of +77°F at night.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +81°F to +81°F.
Is Ko Samui warm or cold in April?
Ko Samui is typically warm in April.
Maximum temperatures go up compared to the previous month from +81°F to +81°F. The minimum temperature also goes up from +77°F to +77°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how April is compared to other months in Ko Samui:
Water temperature in Ko Samui in April
Water in Ko Samui in April is Very warm. It varies from +83°F to +89°F, with an average of +86°F.Note that the air temperature is lower than the water temperature, averaging around +81°F.
The water temperature in April is one of the warmest of the entire year:
The warmest water temperatures in Ko Samui are reached in May, when the average sea temperature rises to +86°F. The coldest water temperatures are in January, with an average of +82°F.
Can you swim in Ko Samui in April?
You can definitely swim in Ko Samui in April, the water is very warm (+86°F in average), and might even be unpleasant for ones who like it more fresh.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Don't forget sunscreen and a hat, it's going to be hot!
Climate in Ko Samui in April
Ko Samui weather looks like this, on average, in April and the surrounding months.
March
April
May
Avg. temperature
+81°F
+81°F
+82°F
Min. temperature
+70°F
+70°F
+70°F
Max. temperature
+88°F
+91°F
+93°F
Rainfall
60 mm
86 mm
116 mm
Wind
3 m/s
2 m/s
2 m/s
Avg. water temperature
+84°F
+86°F
+86°F
Humidity
78%
78%
78%
Air pressure
1010 HPa
1008 HPa
1008 HPa
Sunny days
6
3
0
Cloudy days
10
6
2
Rainy days
11
12
12
Snowy days
0
0
0
April weather is still as ok as in March.The temperature levels stay the same in the area of +81°F for average maximum temperature during the day.Prepare for more rain. Average rainfall goes from 60 mm to 86 mm.Humidity levels don’t change as the month goes on, averaging around 78%.Winds are calmer in comparison to March, going down from 3 m/s to 2 m/s on average.The days becoming less sunny, going from 6 sunny days in March to 3 in April.
Wind speed in Ko Samui in April based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Ko Samui is gradually decreasing during April, going from 4 m/s to 2 m/s over the course of the month.
Rain
Amount of rainfall in mm during April in Ko Samui based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in April stands at 23%, leading to total precipitation of around 18 mm. The maximum amount of rainfall per day is around 4 mm, which is considered light rain.On average, there are about 7 rainy days during April, so prepare to bring an umbrella.
Here’s how April is compared with other months in the amount of precipitation, total mm:
Ko Samui wettest month is November, where a typical day has a 57% chance of precipitation and 278 mm of rainfall per day. February, on the other hand, is the driest month with a mere 38% chance of precipitation and 29 mm of rainfall per day.
How was the weather last April in Ko Samui?
This is the weather in Ko Samui in April 2023:
1 April
☀️
+81°F
2 April
☀️
+81°F
3 April
☀️
+81°F
4 April
☀️
+83°F
5 April
☀️
+83°F
6 April
☀️
+81°F
7 April
☀️
+82°F
8 April
☀️
+81°F
9 April
☀️
+81°F
10 April
☀️
+81°F
11 April
☀️
+83°F
12 April
☀️
+84°F
13 April
☀️
+83°F
14 April
☀️
+83°F
15 April
☀️
+83°F
16 April
☀️
+80°F
17 April
☀️
+82°F
18 April
☀️
+83°F
19 April
☀️
+83°F
20 April
☀️
+83°F
21 April
☀️
+83°F
22 April
☀️
+81°F
23 April
☀️
+81°F
24 April
☀️
+83°F
25 April
☀️
+83°F
26 April
🌧️
+81°F
27 April
☀️
+81°F
28 April
☀️
+81°F
29 April
☀️
+81°F
30 April
🌧️
+81°F
In April 2023 Ko Samui had 28 sunny days, 0 cloudy days, and 2 rainy days. The average maximum temperature was +82°F, with an absolute maximum of +84°F and a minimum of +81°F. The average humidity was 79%, with a maximum of 100% and a minimum of 65%. The average wind speed was 2 m/s, with a maximum of 7 m/s and a minimum of 0 m/s.
Are you planning a trip in April?
Climate Change Over the Years
This is how Ko Samui climate has changed over the last 43 years.
The climate in Ko Samui in April has not changed that much over the last 43 years.
The average temperature was the lowest in 1986 (+79°F) and the highest in 2012 (+83°F). The driest year was 1997 with only 927 mm of rainfall, and the wettest year was 1999 with 1981 mm.
FAQ
Frequently asked questions about the weather in Ko Samui in April:
Is April a good time to visit Ko Samui?
It’s always a good time to visit Ko Samui, but the weather is changeable in April, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Ko Samui in April?
April is warm in Ko Samui. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Can you swim in Ko Samui in April?
Yes, you can swim in Ko Samui in April, the water is very warm, with temperature averaging at +86°F, but it's important to manage hydration and sun exposure.
Is Ko Samui rainy in April?
Ko Samui is often rainy in April. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Ko Samui in April?
Usually, it’s not very sunny in Ko Samui in April, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
Other cities in Thailand
Check out the weather for other cities in Thailand.
For this page, we’ve looked at the typical weather in Ko Samui, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
