These are what the elderly peoples at temples used to tell me.

Avoid any wedding on 6th Month of Chinese Calendar. 6 resembles half of the year = it signifies the split in relationship & the marriage will not last.
Avoid any wedding date during the period of the Ching Ming month. That period is reserves for the paying respect to the ancestors who have passed away.
Avoid any wedding date during the period of 7th Month of Chinese Calendar. This month is reserves for the wandering souls.
Avoid also the wedding period around Dong Zhi time, the elderly told me Dong Zhi is actually the new year festival for the souls in after world.

The most popular dates for wedding usually will be the 8th Month & 9th Month of the Chinese Calendar , usually preferred date to overlapped with the public holidays or school holidays so that the families, relatives & friends can join your wedding reception.

If the element of weather is important to the date selection, try to avoid the following :-

1) period close to Deepavali
2) 9th Month of Chinese Calendar - 9 Emporers Birthday

These 2 periods above are associated with heavy rain - the rubber farmers will tell you these stuff.

You best dry period should the period 100 days before the commence of the durian season. The duration for durian to ripe from the durian flowers to blossom needs 100 days. Before the trees can produce the flower buds , the trees need to be stressed to a period of drought. If based on this observation, your best dry period should be around Feb to March.

Normally ppl will have tendency to avoid element of weather for their wedding reception because it is totally unpredictable.

This post has been edited by nihility: Jan 16 2022, 08:48 PM

The ROM & Ceremony date can be 2 different days. If you are particular on the stars selection, I believe that date should be your ceremony date because on the ceremony day, you need to bow to the Heaven as the witness to the marriage.

For ROM you can select it on weekend (Sat & Sun), normally shall be earlier than ceremony date.

ROM = official registration with JPN, non religious related
Ceremony date = religious related. Normally the wedding reception will be held on same day as ceremony date.