Chiang Mai's high season is kicking off with one of its most established fixtures: the Citylife Garden Fair, marking its 21st edition this November. The two-day charity event runs 1-2 November at the leafy Boonthoong Gardens in Saraphi district, just outside the city centre, with organisers expecting more than 15,000 visitors across the weekend.

What started as a modest garden fair after the 2015 Indian Ocean tsunami relief effort has grown into a sprawling marketplace of well over 400 stalls. Expect a mix of handcrafted goods, fashion, plants, homeware, art, gifts and local products - essentially a one-stop spot for picking up unique northern Thai crafts ahead of the gift-buying season.

The entertainment line-up is built for a full day out. Morning sets come from local school bands, with live acts at 4pm and Chiang Mai favourite bands closing things out in the evening. Raffle draws run throughout both days with generous prizes from northern businesses, and food and drink stalls are on hand to keep the crowds fuelled.

The charity side is where this fair sets itself apart. Over two decades it has raised millions of baht for causes across northern Thailand and beyond, supporting children, vulnerable communities, medical projects, disaster relief, environmental initiatives and smaller grassroots organisations. This year's main beneficiary is the Philanthropy Connections Foundation's support for Ban Uankarn, a home and community project in Sangkhlaburi, Kanchanaburi province, which cares for 137 children and runs weekly outreach to elderly and disabled residents.

There's also a local twist: 30% of funds raised will go towards Boonthoong Chiang Mai's air-filtration lending library, an initiative aimed at making purifiers more affordable during the city's annual smoke season - a cause many residents and regular visitors will recognise as sorely needed.

Practicalities matter with a crowd of 15,000 expected. Parking will be tight, so plan to use the regular 20-baht shuttle service from Chiang Mai Airport Plaza instead of driving.

For travellers, the fair is a great excuse to time a Chiang Mai trip for early November, when the rains have stopped, temperatures are dropping and the city's event calendar is filling up. It combines shopping, live music and an easy way to spend a day contributing to local causes - all in a garden setting a short hop from the old city.