The 12 Months in Thai: Names, Tones & How to Say Them

The 12 months in Thai each pair a zodiac sign with one of three fixed endings, and that ending is secretly a calendar. -คม (-khom) marks a 31-day month, -ยน (-yon) marks a 30-day month, and -พันธ์ (-phan) belongs to just one month — กุมภาพันธ์ (gum-phaa-phan), February, the short one. So January is มกราคม (má-gà-raa-khom), the Capricorn month with 31 days, and you can read its length straight off the name. There are no gender particles inside a month-name — a month is a month whoever is speaking.

That makes the months less of a memory slog than they first look. Learn the three endings and you are really only memorising twelve zodiac roots, in the same way the days of the week are just one word plus a planet. Months sit right beside numbers and colors in the everyday core, so study them as a set rather than one at a time.

The ending tells you the length

Here is the trick no phrasebook spells out. The three endings come from Sanskrit and each one does a job:

• -าคม (-aa-khom), loosely "the arrival," is stapled onto every 31-day month: January, March, May, July, August, October, December. Seven months, one ending.
• -ายน (-aa-yon), "the movement," marks every 30-day month: April, June, September, November. Four months.
• -าพันธ์ (-aa-phan), "the bond," is unique to กุมภาพันธ์, February — the 28- or 29-day odd one out.

So the ending is a built-in rule for "thirty days hath September." If a Thai month ends in a hard -k sound (คม), it has 31 days; if it glides to -yon, it has 30; and the single -phan month is February. You never have to count knuckles again.

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All 12 months

Each name is the zodiac sign followed by its ending. The tone marks below sit on the syllable that trips people up:

• มกราคม (má-gà-raa-khom) — January, from มกร (Capricorn, the sea-goat)
• กุมภาพันธ์ (gum-phaa-phan) — February, from กุมภ์ (Aquarius, the water-pitcher)
• มีนาคม (mii-naa-khom) — March, from มีน (Pisces, the fish)
• เมษายน (mee-sǎa-yon) — April, from เมษ (Aries, the ram) — rising tone on ษา (sǎa)
• พฤษภาคม (phrʉ́t-sà-phaa-khom) — May, from พฤษภ (Taurus, the bull)
• มิถุนายน (mí-thù-naa-yon) — June, from มิถุน (Gemini, the pair)
• กรกฎาคม (gà-rá-gà-daa-khom) — July, from กรกฎ (Cancer, the crab)
• สิงหาคม (sǐng-hǎa-khom) — August, from สิงห์ (Leo, the lion) — rising on both สิง and หา
• กันยายน (gan-yaa-yon) — September, from กันยา (Virgo, the maiden)
• ตุลาคม (dtù-laa-khom) — October, from ตุล (Libra, the scales)
• พฤศจิกายน (phrʉ́t-sà-jì-gaa-yon) — November, from พฤศจิก (Scorpio, the scorpion)
• ธันวาคม (than-waa-khom) — December, from ธนู (Sagittarius, the bow)

The abbreviations you'll read everywhere

In daily life you will almost never see the full name written out. Thai shortens each month to two initials, each with a period — the first letter of the first syllable and the first letter of the last: ม.ค. (January, ม + ค), ก.พ. (February), มี.ค. (March), เม.ย. (April), พ.ค. (May), มิ.ย. (June), ก.ค. (July), ส.ค. (August), ก.ย. (September), ต.ค. (October), พ.ย. (November), ธ.ค. (December). March and June carry two letters in that first half (มี.ค., มิ.ย.) because three month-names open with ม — มกราคม, มีนาคม and มิถุนายน — so a bare ม for each would blur them.

These stamps are everywhere once you start looking: the expiry date on a convenience-store sandwich, the entry stamp in your passport, the due date on a utility bill. Learning to read ก.พ. at a glance is honestly more useful day-to-day than being able to pronounce กุมภาพันธ์ in full.

Thai years: the Buddhist Era

One more thing the calendar will throw at you. Thailand counts years in the Buddhist Era (พ.ศ., phút-thá-sàk-gà-ràat), which runs 543 years ahead of the Western year. So 2026 CE is พ.ศ. 2569, and a date on an official form reads day, then month abbreviation, then the Buddhist year — for example 5 พ.ย. 2569. When you renew a visa or read a receipt, that four-digit year in the two-thousand-five-hundreds is not a typo; it is simply the Thai convention.

The mistakes to skip

Two pairs of months are where learners stall. The first is the two พฤ twins: พฤษภาคม (May) and พฤศจิกายน (November) both open with the cluster พฤ, pronounced phrʉ́t, and sound alike for a beat. Pin them by their endings — May is a -คม month (31 days, Taurus), November is a -ยน month (30 days, Scorpio) — which is exactly why the deck above drills the two of them back to back rather than scattered through the year. The second pair is มีนาคม (March, mii-naa) and มิถุนายน (June, mí-thù); the vowels and tones diverge immediately after that first ม, so say them slowly until the split is automatic.

The other slip is the tones on the short roots. สิงหาคม (August) is rising–rising–mid, not flat, and ตุลาคม (October) opens low on ตุ (dtù). Flatten them and you will still be understood, but a Thai ear clocks it at once — the Paiboon tone marks printed above every flashcard show you exactly where the pitch should sit. Study the twelve together with the rest of the essential Thai phrases, run the deck in both directions, and the whole year will come out without a pause.