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Phuket Rainfall Averages

You'll find Phuket weather averages on many websites - rainfall, temperature... and the data seems about right to me, but I never see any mention of where the data comes from, where it was measured exactly or what years it is based on. So I was happy to find a Danish guy living in Patong who has been measuring the rainfall since 1998. Every day. Thank you very much to Steen for sending me his data for the last 11 years. He says he's using a rain measuring gauge called Rain-o-Matic made by a company called Pronamic. Now, of course there can be variation in rainfall around Phuket. Showers and thunderstorms can be very isolated. It can rain in Karon Beach, not in Patong. It can rain in Patong, but not 5km over the hill in Kathu where I live. BUT given 11 years worth of data, things should average out pretty well!

Rainfall Averages for Phuket 1998 - 2009

Phuket Rainfall Averages 1998 - 2009

What can we learn from this? Well, it does agree with most other averages I have seen. I am surprised to see October as the wettest month... but then again an average October can see some heavy rain early in the month, and then as the SW monsoon winds disappear you get some heavy thunderstorms later in the month which last only an hour but can be very heavy. There IS plenty of sun in October too, and later in the month the seas are often calm and the main diving season really gets going.

Best months - well, sure December - February. The data from Steen shows 3 years (2002, 2005 and 2006) with no recorded rain in February. December varies from 2mm in 1999 up to 131mm in 2004. But on average these 3 months are the best for a hot sunny Phuket holiday. March gets a bit wetter, but can vary wildly - from 6mm in 2004 up to 249mm in 2001. Mostly this will be brief heavy thunderstorms, as March is a very hot month. You don't get much in the way of wind or bad weather. A one hour thunderstorm on a hot day can be a good thing! April is a very hot month and again gets thunderstorms, but the seasons can start to change in late April.

May is the start of the "wet season" and you often get more rain, as is shown. But I think it is clear that June and July are not too bad for a summer holiday. This year has seen the driest June (50mm rain) since Steen started measuring data. Wettest was 2006 (over 400mm!). August looks surprisingly wet too, but again a lot of variance over the years ranging from just 89mm of rain in 2005 up to over 500mm in 2000. September I thought was the wettest month. I think compared to October, September is not as nice - you will still get wind and waves due to SW monsoon winds, which then die out in October.

How many days does it rain?

Well, how do you define a rainy day? I would say there are very few "rainy days" in Phuket at any time of year. I would call it a rainy day if the rain falls for long periods, skies are grey and the weather forces you to change your plans. The kind of day when you crack open a beer at the hotel bar at 10am and think glum thoughts.

Well, the graph below shows the average number of days that recorded "some rain". Could be 2mm, could be 100mm in a day. As I say, many days have just short bursts of rain and are still what you'd call a "nice day"!

Rainy Days in Phuket - Average 1998 - 2009

Even taking into account what I just said about short bursts of rain and isolated thunderstorms, you can see that the "low season" summer months from May - August have totally dry days more than 50% of the time. I keep telling people that the summer is not a bad time to come! From December to March, very few rainy days. Again, plenty of yearly variance - the month of June 2009 saw only 7 days with any kind of rain, the same as in February 2006. In 2008 there were only 120 days in the whole year with some rainfall, compared to a high of 171 days in 2000.

Oh, the weather is such a fickle friend! You can come to Phuket in January and still get rained on. You can come in a "wet" month and have great weather. Following averages does not mean 100% that the weather will be better in March compared to July. A good chance, sure, but for example March this year saw over 180mm of rain.. in 2008 only 15mm was measured in March. So I say this... don't worry too much about the weather!



Phuket Rainfall Averages  |  The Phuket Weather Blog

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This Phuket Weather blog entry was first published on July 15, 2009

  Comments

  Please do add a comment or ask a question ...

Blogger Donno :

Despite the data, is it still possible to travel to the islands (such as phi phi) on wet season? I'll be visiting patong in sept and afraid that I might need to stay on land for 6 days.

July 15, 2009  


Blogger Jamie Monk in Phuket :

Donno, read what I wrote again. YES the weather is OK most of the time in the low season. Here's a link to a blog page I wrote about the low season:

Phuket in low season - Great time to come!

July 15, 2009  


Anonymous Anonymous :

Thank you for a fantastic blog about Phuket. Really enjoy reading it. And hope you write much more!:)
-Kristin, Norway.

February 01, 2010  


Anonymous Anonymous :

I am planning to visit to Phuket in first week of October.Can anyone advise that it is good time to visit?

September 08, 2010  


Blogger Jamie Monk in Phuket :

First week in October, probably on average the wettest week of the year. Don't be too worried by that. My mum and dad will also be here until the 5th. And the Phuket Vegetarian Festival starts on the 7th. It's a good week :)

September 08, 2010  


Anonymous Anonymous :

Hi, any input for 20-22 Nov 10. I intend to visit Phuket.

November 11, 2010  


Blogger Jamie Monk in Phuket :

I do not know the exact weather in the future, sorry. My guess is that later in November will be mostly sunny. 21st is Loy Krathong by the way. Enjoy!

November 11, 2010  


Blogger Taran :

Hi, I was really amazed at the in depth content of this blog.. was searching for this kind of information. Thanks :)
Actually, I was thinking of visiting Krabi or Phuket in 1st week of july this year for around 5 days for a small holiday and dont want the weather to play spoilsport... and was looking for this kind of information... what do you think of this year.. wettest March already.... hmm should I rethink?
But thanks for putting up such a wonderful n content full blog :)

Warm Regards

March 30, 2011  


Blogger Jamie Monk in Phuket :

Hi Taran,

Well July is low season, but normally, despite some rain, it's a decent month to travel. My family visited from England several times in July and the weather never stopped us from doing anything. A wet March does not mean a wet July is coming, could be quite the opposite, maybe we'll get the driest July ever!

March 30, 2011  


Blogger m4b3l :

hi, jamie

me and my partner are visiting phuket on 08 may to 12 may and im worried about the wet weather will stop us from doing anything. as i check the weather forecast there will be thunder storm and rain.

May 04, 2011  


Blogger Jamie Monk in Phuket :

Hello! Well, thats just a few days from now and the last 2 days has been mostly sunny with some rain, nothing to worry about at all.

May 04, 2011  


Anonymous Anonymous :

Hi Jamie,

Thank you so much for all the information that you provide on your blog!!!Low season is not a bad time to visit after all!

My husband and I are coming to Phuket this Saturday (14th May). We are planning to stay in Phuket for 4-5 days and then move over to Krabi for another 5 days...How is the weather scene currently?Scattered rains here and there? Are trips to phi phi and Phang Nga Bay happening or is the sea too choppy?Will we be able to go for snorkeling/diving trips?

We are worried that we might not be able to do much because of heavy rains...

May 11, 2011  


Blogger Jamie Monk in Phuket :

I'll get the blog updated later today I hope - weather is no too bad, some sun, some cloud, a little rain, forecast next week is good, all trips running as normal.

May 11, 2011  


Anonymous Anonymous :

Hi Jamie ! Thanks for your blog, full of valuable informations.

One question please : there is one missing data : average hours of sun in a day.

You can get a lot of rain in a month, you can get a lot of days with rain. But to my opinion, the rain is not a problem :
- it can rain every day
- it can rain a lot when it rains
But if the "shower" is from 7 PM to 10 PM (it's an example of course), to my opinion, it should not spoil holidays.

I prefer a big shower 1 hour/day rather than small rains 24h/day

What do you think ? Do you know where I can get the information "average hour of sun per day" ?

Thanks a lot

May 22, 2011  


Anonymous Jamie :

Ah yes, you are right "my opinion, the rain is not a problem" - I agree, the rain is NOT a problem, but some people are obviously related to the wicked witch of the west and will melt if they get wet. Every day is different, you can have days when it rains almost all day, you have days with sun and 30 minutes heavy rain, you have cloudy days with no sun, but no rain, you have nice days, ok days and wet days. But, on average, low season weather is decent, it's ok, just please nobody expect perfect tropical sunshine and crystal clear calm blue seas year round!

May 27, 2011  


Anonymous Anonymous :

Hi Jamie, I know you cannot predict the weather so apprecaite the info u do give, but what do you think about Late Jan / early Feb 2012? We came to Phuket / Patong last Dec (2010) and the weather was a bit of a let down. With the weather changing all around the world it's hard to know the best time to visit. My boyfriend came out to Thailand in Nov 2006 and only had a few heavy showers but it was very hot the rest of the time so we were surprised Dec last year wasn't the same, if not better!

August 25, 2011  


Blogger Jamie Monk in Phuket :

"I know you cannot predict the weather ... With the weather changing all around the world it's hard to know the best time to visit."

Correct! And we have been having some really nice weather this lo season! On average you should get the best weather in January - February. Book it!

August 25, 2011  


Anonymous Anonymous :

Hi Jamie,

Me and my mate r planning to visit patong beach 8-11 OCT, is that going to be a really bad idea with the highest rain month of the year?Please advise, or do you hav any recommendation of any nice n budget island to go in south east asia around that time of the year?

Cheers

September 01, 2011  


Blogger Jamie Monk in Phuket :

8-11 October - I mean, there's a good chance of rain, but on the other hand, the rain often falls just for short periods and I am sure you'll enjoy it anyway - some Patong hotel information on my Phuket Blog:

Patong Beach Hotels

September 02, 2011  


Blogger Hernan :

Hi Jamie! Thanks so much for all this detailed and helpful info.
My wife and I are planning on visiting the island for the first time (first time in Thailand too) for 6 days between Oct 25 and Oct 31. Would you please share your thoughts in terms of weather conditions for these dates, compared to previous years? Would they be at least decent to plan day trips to Phi Phi and Phang Nga Bay? Thanks again, Hernan

May 15, 2012  


Blogger Jamie Monk in Phuket :

Hi Hernan - end of October is drier than early October - for example, last year October had over 600mm rain, but 500mm of that was in the first half of the month. In 2010, nearly 400mm in October, but 300 was in the first half of the month. You *will* get some rain, but nothing nasty. West wind should have gone by end of the month.

May 16, 2012  


Anonymous Anonymous :

Hi Jamie, I would like to know how much it has rained for each month so far this year. Today is 16 May, 2012. Do you have that info posted somewhere? Thanks.

May 16, 2012  


Blogger Jamie Monk in Phuket :

2012 rainfall is not on the blog yet, you can find reviews of 2011, 2010, 2009 weather - links top left of the page. Rainfall (mm/month) so far for 2012 :

Jan : 130
Feb : 86
Mar : 178
Apr : 439
May : 138 (up to 15th)

May 16, 2012  


Blogger RY :

Hi Jamie, I'm thinking about visiting Bangkok the first week of October, and then Phuket during the 2nd week of october. How do you think the weather will be? Thanks!

June 11, 2012  


Blogger Jamie Monk in Phuket :

Likely to be wet, RY! October is on average the wettest month of the year, though later in the month it can often be great weather.

June 12, 2012  


Anonymous Anonymous :

Thanks for the great blog. Thinking of coming to Phuket 1st Oct for 2 weeks. I will have 2 14yr olds who love to be in the sun. Dont wont moaning girls becausing its raining to spoil holiday. You mention short spells of rain. Guessing what time i.e 1 hour, 2 hour do these spells last.

June 13, 2012  


Blogger Jamie Monk in Phuket :

Early October likely to be the wettest time of the year, can rain in short spells or half a day. Not ideal time for visiting if the main plan is getting a suntan ....

June 13, 2012  


Anonymous Anonymous :

H!i we are going on holiday to Phuket on july 18th for 5-6 days ...then most likely on to Koh Samui to stay for a week. Pls can you tell me on which side of Phuket it tend to rain the least? How about koh samui, you think there will be less rain the more north we go? Bests, Milla

July 05, 2013  


Blogger Jamie Monk in Phuket :

People sometimes say the south of Phuket gets less rain than the north, but I don't think there's really any difference on average between different parts of the island. It's low season, it might rain a bit, or not at all, or a lot! Samui on average is drier than Phuket in August.

July 05, 2013  


Anonymous Milla :

Thanks Jamie, Milla ;)

July 08, 2013  


Anonymous Anonymous :

Hi Jamie,
I am planning a trip to Phuket from 3 nov to 6 nov. Is this period a rainy season?

August 30, 2013  


Blogger Jamie Monk in Phuket :

November is not "rainy season" but you might get some rain. Normally mostly sunny with some quick thunderstorms.

August 30, 2013  


Anonymous Anonymous :

Thank Jamie! Appreciate your kind advice :)

August 30, 2013  


Anonymous Anonymous :

Hi Jamie, This such a fab weather blog - I have a question about the humidity in September/October - how oppressive is it at that time of the year - does it make it difficult to be 'active'? Is it 'distressing' in an uncomfortable way? Somebody told me once that it just makes a 30 degree day feel like 40 - is that about right? Or is it worse?? We don't get a lot of humidity where we are! Thanks!

May 31, 2014  


Blogger Jamie Monk in Phuket :

I think the humidity is fairly high during most of the low season (May to October) and it varies day by day. After some rain it's worse. But nothing to be worried about!

May 31, 2014  




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