If you see a citrus fruit with green skin in Thailand, you do not have to assume it is unripe from the colour. The skin and flavour of a mandarin orange differ with the variety. You can peel it by hand and eat it segment by segment, so it is a good fruit to share on a trip.
A reference photo showing Thai mandarin orange. It is not limited to photos of the Thai growing areas or varieties described in the text. Citrus reticulata April 2013 Nordbaden · 4028mdk09 · CC BY-SA 3.0 Resized for display · Photo used under CC BY-SA 3.0
When is the best time to eat it?
Main season October–February Listed as available all year Golden orange from Nan: harvest period listed as November–December
Use the main season, or the harvest period for regional fruit, as a guide. Actual availability can vary with the growing area, the variety and the weather.
What does it taste like?
You enjoy the sweetness and the sharpness of citrus together. The flavour changes with the variety and how ripe it is, and the flesh may have seeds.
Why this fruit is well known in Thailand
Thailand has several mandarin orange varieties. The golden orange from Nan is presented as a regional GI fruit, known for its green skin and sweet and sharp flavour.
Good to know before you buy
Thai name
ส้มเขียวหวาน
Harvest period
Main season October–February
Regional fruit
Golden orange from Nan: harvest period listed as November–December
How it is sold
Compare per-kilo prices with variety and size grade only against the same grade. Go by more than the colour of the skin, and choose fruit that is ready to eat straight away together with the seller.
How to prepare and eat it
Peel off the skin, split it into segments and eat.
For varieties with seeds, take out the seeds as you eat.
Look separately at the prices of bottled juice and whole fruit by the kilo.
A guide to prices
Bangkok retail prices · 14 October 2026 These are prices by variety and grade, surveyed by Thailand’s Department of Internal Trade. They do not apply to every stall on the street.
Whole-fruit retail prices for reference · Thai baht (THB)
Keep the price of a bag or tub of cut fruit separate from the per-kilo price of whole fruit. Bananas are priced per bunch in this survey.
Frequently asked questions
Can I only buy it in season?
The guide gives its timing as: Main season October–February. It is available all year, but volumes and prices can change with the season and the variety. The calendar does not guarantee that it is on sale on any particular date.
How do I compare a per-kilo price with the price of a tub?
Compare per-kilo prices with variety and size grade only against the same grade. Go by more than the colour of the skin, and choose fruit that is ready to eat straight away together with the seller.
If you would like to read more about the food and the regions behind it, these sources are worth a look. Ingredients and cooking methods can vary from one cook to the next.