New Zealand has been issued a travel warning to Turkey for Anzac Day ceremonies.

The Ministry of Foreign Affairs and Trade (MFAT) outlined on SafeTravel extreme, high and some risk areas following civil unrest and terrorism ahead of the commemorative events held at Gallipoli on April 25.

The warning advised against all tourist and other non-essential travel to Ankara and Istanbul.

"If you are travelling to Gallipoli for Anzac Day we advise you minimise your transit time in Ankara and Istanbul and avoid tourist areas in these cities," MFAT said.

"There is extreme risk to your security within 10 kilometres of the border with Syria due to the threat of terrorism and kidnapping and the potential for violence associated with the ongoing conflict in Syria. We advise against all travel to this area."

MFAT said there was also an extreme risk in Diyarbakir, in south-east Turkey, due to ongoing security force operations in the Sur district.

A number of high risk areas were outlined in south-east Turkey. Elsewhere in Turkey has been outlined to pose some risk. MFAT advised travellers to exercise caution when visiting, including the Gallipoli peninsula.

"There is currently no indication that terrorist groups have intentions to target New Zealanders, New Zealand interests or the Gallipoli commemorations in Turkey," MFAT said.

With no ballot for the 2016 Anzac Day services MFAT said it was difficult to say how many New Zealanders would be attending.

Those travelling to Turkey for the commemorations have been urged to regularly monitor SafeTravel in the lead up to the event and are encouraged to register their details with MFAT. They are also urged to ensure they have comprehensive travel insurance in place that includes provisions for medical evacuation by air and check which circumstances and activities are covered and not covered by their insurance policy.

Consular staff from MFAT will be positioned in Istanbul, Canakkale, and on the Gallipoli Peninsula over the period April 17-27 to provide assistance required by New Zealanders attending the Gallipoli commemorations.

"New Zealanders throughout Turkey are advised to exercise a high degree of vigilance in public places and keep themselves informed of potential risks to safety and security by monitoring the media and other local information sources," MFAT said.

"The security environment in Turkey may change between now and Anzac Day."

Travellers can register/update their travel plans at: www.safetravel.govt.nz/news/anzac-day-2016-gallipoli.