August 2026 is a turning-point month in the Tamil calendar — it carries the final rites of the Aadi month, welcomes the auspicious month of Avani, and packs in some of the year’s most important observances for ancestor worship, Amman devotion, and thread-changing ceremonies. If you’ve been searching for the Tamil Calendar 2026 August (தமிழ் நாட்காட்டி 2026 ஆகஸ்ட்), this guide brings together every major Muhurtham date, festival, and vratham for the month, verified against current Panchangam calculations.
Whether you follow a Tamil daily calendar for religious observances or you’re looking for auspicious dates to plan a wedding, housewarming, or new business launch, here’s everything you need for August 2026.
Tamil Calendar August 2026 — Festival & Muhurtham Dates
Here is the verified list of major festivals, vratham days, and observances for August 2026, based on the Tamil Panchangam for Chennai:
| Date | Day | Festival / Muhurtam / Event |
|---|---|---|
| August 9, 2026 | Sunday | Kamika Ekadashi |
| August 10, 2026 | Monday | Pradosham |
| August 12, 2026 | Wednesday | Aadi Amavasai (Pitru Tarpanam Day) |
| August 14, 2026 | Friday | Andal Jayanthi |
| August 17, 2026 | Monday | Avani Month Begins (Simha Sankranti) / Skanda Sashti |
| August 21, 2026 | Friday | Varalakshmi Vratham |
| August 23, 2026 | Sunday | Ekadashi (Putrada Ekadashi) |
| August 25, 2026 | Tuesday | Pradosham |
| August 26, 2026 | Wednesday | Avani Avittam (Rigveda) / Onam |
| August 27, 2026 | Thursday | Avani Avittam (Yajurveda) |
| August 28, 2026 | Friday | Pournami (Shravana Purnima) / Raksha Bandhan / Gayathri Japam |
| August 31, 2026 | Monday | Sankatahara Chaturthi |
Note: Krishna Jayanthi (Gokulashtami), which many older calendars list in August, actually falls in September this year — on September 3–4, 2026 (Ashtami Rohini). Since it’s calculated from the lunar cycle, the exact date shifts every year, and 2026’s cycle pushes it just past the August–September line.
Download the Tamil Calendar August 2026
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Key Observances August 2026
Kamika Ekadashi (August 9)
Falling in the waning phase of the moon during Aadi, Kamika Ekadashi is dedicated to Lord Vishnu. Devotees observe a day-long fast, offer Tulsi leaves, and recite the Kamika Ekadashi katha, believed to cleanse past sins and bring peace of mind.
Pradosham (August 10 & 25)
Pradosham falls twice a month, roughly 13 days after each new and full moon, and is dedicated to Lord Shiva. The most powerful window for prayer is the twilight period (Pradosha Kaalam) just before sunset, when many devotees visit Shiva temples for a special abhishekam.
Aadi Amavasai (August 12)
One of the most significant days of the Aadi month, Aadi Amavasai marks the first new moon of the Dakshinayana period and is set aside for Pitru Tarpanam — offerings made to one’s ancestors. Thousands of families travel to sacred rivers, temple tanks, and coastal towns like Rameswaram and Kanyakumari to perform this ritual, believing it brings peace to departed souls and blessings for the living.
Andal Jayanthi (August 14)
This day celebrates the birth of Andal, the only woman among the twelve Alvar saints of Tamil Vaishnavism, revered for her devotional hymns to Lord Vishnu. Temples, particularly in and around Srivilliputhur, hold special poojas and recitations of her verses on this day.
Avani Month Begins / Simha Sankranti (August 17)
This is the pivot point of the month. As the sun transitions into Simha Rashi, the Tamil solar calendar moves from Aadi into Avani — widely regarded as one of the most favourable stretches of the year for weddings, housewarming ceremonies, and new business launches. The same day also carries Skanda Sashti, dedicated to Lord Murugan, making it a doubly significant date for many families.
Varalakshmi Vratham (August 21)
Observed on the Friday before the Shravana full moon, Varalakshmi Vratham honours Goddess Lakshmi in her boon-granting form. Married women set up a decorated kalash representing the goddess, perform an elaborate puja through the day, and pray for the health, prosperity, and well-being of their families — one of the most widely observed household rituals of the month.
Avani Avittam (August 26 & 27)
Avani Avittam is the sacred thread-changing ceremony observed by Brahmin communities across Tamil Nadu, performed on different days depending on the Vedic tradition followed — Rigveda families observe it on August 26 (which also coincides with Onam this year), and Yajurveda families on August 27. The ritual involves a ceremonial bath, chanting of the Gayatri mantra, and the replacing of the sacred thread (poonal).
Pournami / Raksha Bandhan (August 28)
The full moon day of Shravana closes out the Avani Avittam season with Gayathri Japam and, in North Indian households living across Tamil Nadu, Raksha Bandhan. It’s considered an auspicious day for charity, fasting, and prayer to the moon.
Sankatahara Chaturthi (August 31)
This monthly observance is dedicated to Lord Ganesha, the remover of obstacles. Devotees fast through the day and break their fast only after sighting the moon in the evening, praying for wisdom and a smoother path ahead — a fitting close to the month as it hands over into September.
Aadi to Avani: Why the Shift Matters
If you’ve ever wondered why some Tamil calendars discourage weddings in early August but recommend it later in the month, this is why. Aadi is traditionally seen as a month for introspection and devotion rather than new beginnings — many families deliberately avoid scheduling weddings, housewarmings, or business launches during this period. The moment the solar calendar shifts into Avani around August 17, that restriction lifts, and the back half of the month becomes one of the busiest wedding and Muhurtham seasons of the year. This is also why popular Tamil almanacs — including well-known publishers’ calendars — tend to print an unusually long list of “good Muhurtham days” for the second half of August specifically.
Conclusion
August 2026 captures the Tamil calendar at its most transitional — from the devotional stillness of Aadi to the auspicious energy of Avani, with Aadi Amavasai, Varalakshmi Vratham, and Avani Avittam marking some of the year’s most meaningful family rituals along the way. Keep this Tamil Calendar August 2026 list handy through the month, and check back for September’s calendar as Krishna Jayanthi and Vinayaka Chaturthi approach.