Box Jellyfish Calendar 2018 | Thailand | Vietnam | Malaysia | Singapore | Philippines

Box jellyfish scars on child's hand. Thailand and southeast asian countries.
The chemical burn of box jellyfish tentacles is extreme and the pain is unbelievable. Please protect yourself and children. Besides the pain, your heart can stop. It’s that serious.

Box jellyfish are fairly common on some Thailand beaches and beaches across Southeast Asia. Stings by these venomous sea creatures can be debilitating, causing so much pain – and shock – that the injured victim cannot even swim back into shore after contacting a box jellyfish in the ocean. Luckily for us, we can predict when these pests are most likely to be most active and plentiful in waters around Thailand. There are very few stings each year – but you have to protect yourself by being smart.

[Page updated: 7 February 2018]

Several species of jellyfish, mostly harmless, can be found seasonally in Thailand. However, Box Jellyfish are typically found off the beaches of Ko Lanta and Hat Nopparatthara Beach next to Ao Nang Beach in Krabi – Mu Ko Phi Phi National Marine Park off Krabi province, Nam Bo Bay in Phuket province and often off Hua Hin and Cha-am Beaches in Phetchaburi province, as well as Ko Tao in Chumphon province, Ko Samui, and Ko Pha Ngan in Surat Thani province.

The Box Jellyfish Calendar below covers Vietnam, Indonesia, Philippines, Thailand, Malaysia, Singapore, Cambodia, and Australia.

Find out WHAT TO DO in case of a box jellyfish sting – click to learn about Box Jellyfish Sting Treatment

Thailand (Asia) Box Jellyfish Calendar – 2018

REMEMBER – this calendar is based on predictions that are known to occur in box jellyfish species – related to moon phases. There is a tide component, and other factors that are not taken into account – so use this calendar as a guideline, not an infallible tool for predicting box jellyfish close to shore. Jellyfish can be present ANY time.

February 2018

1-7 Low

8 Moderate

9-12 High

13 Moderate

14-28 Low


March

1-8 – Low

9 – Moderate

10-13 – High

14 – Moderate

15-31 – Low


April

1-7 – Low

8 – Moderate

9-12 – High

13 – Moderate

14-30 – Low


May

1-6 – Low

7 – Moderate

8-11 – High

12 – Moderate

13-31 – Low


June

1-5 Low

6 – Moderate

7-10 – High

11 – Moderate

12-30 – Low


July

1-4 – Low

5 – Moderate

6-9 – High

10 – Moderate

11-31 – Low


August

1-3 – Low

4 – Moderate

5-8 – High

9 – Moderate

10-31 – Low


September

1-2 – Low

3 – Moderate

4-7 – High

8 – Moderate

9-30 – Low


October

1- Low

2 – Moderate

3-6 – High

7 – Moderate

8-31 – Low


November

1 – Moderate

2-5 – High

6 – Moderate

7-29 – Low

30 – Moderate


December

1-4 – High

5 – Moderate

6-29 – Low

30 – Moderate

31 – High


January 2019

1-3 High

4 – Moderate

5-27 – Low

28 – Moderate

29-31 – High

Find out WHAT TO DO in case of a box jellyfish sting – click to learn about Box Jellyfish Sting Treatment

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