By Thai tradition, the good days to cut your nails are Sunday, Monday, Wednesday and Friday. Avoid Tuesday, Thursday, Saturday and Buddhist holy days (Wan Phra), and avoid cutting them at night.
Wednesday: no haircuts, but nails are fine (a day of protection)
2026 holy days: full 12-month calendar below
No cutting at night: the real reason was poor light and cut skin
How often: fingernails every 1-2 weeks, toenails every 3-4 weeks
Nail health: cut straight across, not too short, right after a bath to prevent ingrown nails
What is the best day to cut your nails? Thai tradition ties cutting nails and hair to the luck, health and blessings of each weekday, so it is a question people search every week. This Intimo Life guide covers all 7 days, the days to avoid and the 2026 Buddhist holy-day calendar, plus a pharmacist's advice on cutting safely, because whichever day you choose, the right technique is what actually prevents ingrown nails and infections.
Best Day to Cut Your Nails: All 7 Days
There are 4 good days: Sunday, Monday, Wednesday and Friday. The belief comes from Thai astrology, which gives each weekday a ruling planet. Days of benefic planets are good days, while days of malefic planets, or days of respect, are best avoided.
Cutting Nails on Sunday (✅ Good day)
Boosts prestige and luck. Sunday belongs to the Sun, the planet of honour and leadership, and tradition says cutting your nails today invites unexpected good fortune.
Cutting Nails on Monday (✅ Good day)
Brings luck and blessings. Monday belongs to the Moon, linked to gentleness and charm, and cutting your nails today is believed to open the way for windfalls.
Cutting Nails on Tuesday (⛔ Avoid)
Avoid. Tuesday is ruled by Mars, the planet of conflict, and cutting your nails today is said to drain your fortune and cost you money.
Cutting Nails on Wednesday (✅ Good day)
Protection and warding off bad luck. Many people mix it up because tradition forbids haircuts on Wednesday, but for nails Wednesday is a good day, believed to keep misfortune away.
Cutting Nails on Thursday (⛔ Avoid)
Avoid. Thursday is Teachers' Day in Thai tradition, a day of respect when nothing is cut from the body, or obstacles and trouble are said to follow.
Cutting Nails on Friday (✅ Good day)
Wealth and happiness. Friday belongs to Venus, the planet of love, beauty and abundance, and cutting your nails today is believed to keep money flowing.
Cutting Nails on Saturday (⛔ Avoid)
Avoid. Saturday belongs to Saturn, linked in many texts to heavy energy and illness, and cutting your nails today is said to weaken your health.
Summary Table: Good Days and Days to Avoid
In short: cut on Sunday, Monday, Wednesday or Friday; avoid Tuesday, Thursday and Saturday, and any Buddhist holy day whichever weekday it falls on.
Day
Cut nails?
Belief
Sunday
✅ Good
Prestige, luck
Monday
✅ Good
Luck, blessings
Tuesday
⛔ Avoid
Money loss
Wednesday
✅ Good
Protection
Thursday
⛔ Avoid
Obstacles, trouble
Friday
✅ Good
Wealth, happiness
Saturday
⛔ Avoid
Poor health
When Not to Cut Your Nails: 5 Times to Avoid
There are 5 times to avoid: Tuesday, Thursday, Saturday, Buddhist holy days and night-time.
Tuesday: believed to make money slip away
Thursday: Teachers' Day, when nothing is cut from the body
Saturday: believed to harm your health
Buddhist holy days: days of precepts, when cutting nails is said to cut away blessings
At night: said to leak money, but the real reason is poor light and the risk of cutting the skin
From a health point of view the night-time rule makes the most sense. In the days of oil lamps and candles, cutting in dim light meant nicking the skin, and a small cut at the nail edge lets germs in. With good lighting today, it is perfectly safe.
2026 Buddhist Holy Days (Wan Phra) Calendar
There are 4 Buddhist holy days (Wan Phra) a month: the 8th and 15th of the waxing moon and the 8th and 15th of the waning moon (the 14th in a short month). If you follow the belief, check the table before you cut. The remaining 2026 dates are Sep 26; Oct 4, 11, 19, 26 (end of Buddhist Lent); Nov 3, 9, 17, 24 (Loy Krathong); and Dec 2, 9, 17, 24.
Month (2026)
Holy days (date)
January
3, 11, 18, 26
February
2, 10, 16, 24
March
3, 11, 18, 26
April
2, 10, 16, 24
May
1, 9, 16, 24, 31
June
8, 14, 22, 29
July
7, 14, 22, 29
August
6, 13, 21, 28
September
5, 11, 19, 26
October
4, 11, 19, 26
November
3, 9, 17, 24
December
2, 9, 17, 24
Dates follow the Thai lunar calendar; 2026 has an extra eighth lunar month.
How to Cut Your Nails Properly: A Pharmacist's Tips
Cut after a bath, cut straight, and never cut down to the skin. This matters more than the day you pick, because it is what actually prevents ingrown nails, splitting and infection.
Cut after a bath or a warm soak: softened nails cut cleanly without cracking
Fingernails with a gentle curve, toenails straight across: rounding toenail corners lets them grow into the skin
Leave about 1 mm of white edge: cutting too short risks cuts and inflammation
Leave the cuticle alone: it seals the nail base against germs
File in one direction: sawing back and forth splits the nail tip
Use your own tools and clean them every time: 70% alcohol helps stop nail fungus spreading
A good rhythm is every 1-2 weeks for fingernails and every 3-4 weeks for toenails, which grow more slowly.
The Nail Tools Worth Having
The basics are a fingernail clipper, a wide toenail clipper and a file. For thick or ingrowing toenails, a pointed ingrown-nail nipper trims the corner more precisely. Use a cuticle pusher gently, if at all.
Toenails, Ingrown Nails and Nail Fungus
Always cut toenails straight across, and see a pharmacist or doctor if an ingrown nail turns red, swollen or pus-filled, or a nail thickens and changes colour.
Ingrown toenails: caused by cutting too short or too curved, and by tight shoes. Soak the foot in warm water 2-3 times a day and avoid shoes that squeeze the toes. If it hurts badly or has pus, do not dig at it yourself; see a doctor.
Nail fungus: thick, cloudy, yellow, brittle nails, usually starting on the toes and spread through shared clippers and wet floors. Topical or oral antifungals, as advised by a pharmacist, take several months to work.
People with diabetes: reduced feeling in the feet means a small nick can become a chronic wound. Cut straight, check your feet daily, and ask a health professional to trim thick nails or if you cannot see well.
A final thought: choosing a nail-cutting day is a personal belief that brings peace of mind, so cut whenever suits you. What truly affects your health is proper technique, clean tools and spotting nail changes early. Getting a haircut too? Browse short hairstyles for women and Korean men's hairstyles.
Yes. Wednesday is a good day for nails, believed to bring protection. The Wednesday taboo is for haircuts, which people often mix up.
Yes. Friday belongs to Venus, and cutting your nails is believed to bring wealth and abundance.
Yes. Sunday is believed to boost prestige and luck, as long as it is not a Buddhist holy day.
Tradition says avoid it, as it is linked to poor health. If you need to, go ahead; it is a personal belief.
Tradition forbids it as a money leak, but the real reason was poor light. With good lighting and care, it is fine.
Tuesday, Thursday, Saturday, Buddhist holy days and night-time. Sunday, Monday, Wednesday and Friday are good days.
Fingernails every 1-2 weeks and toenails every 3-4 weeks, or when they pass the fingertip. Right after a bath is easiest.
Mild tenderness can be eased with warm soaks and roomy shoes. If it is red, swollen, has pus, or you have diabetes, do not cut it yourself; see a doctor.
⚠️ Disclaimer
The information on this page is for general informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment from a qualified doctor or pharmacist. If you have any questions about your symptoms or medication, always consult a doctor or pharmacist first.
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