Is Sumba actually good for a wedding?
For the right couple and the right guest count, strongly yes: intimacy, authenticity and visual drama that Bali cannot replicate. For an oversized guest list or a couple who needs convenience and vendor redundancy, honestly no. The largest single-property capacity is around 70 adults, the roads are rough, ATMs are scarce and medical facilities are limited. Both of those answers are true at the same time; which one applies is about your list and your temperament.
Why does it cost more than Bali?
Remote logistics, at every line item. Most specialists fly in from Bali with flights, buffer nights, accommodation and per diems. Decor and florals arrive as freight. There is far less local vendor competition to keep prices honest. And the accommodation tier is boutique and luxury only, with no mid-range international chains to anchor the bottom of the market.
When is the best time of year?
Mid-June through late August. Rainfall is very low, skies are reliably clear, days sit at a comfortable 30 to 33°C and nights cool to around 22 to 25°C, and the savannah takes on its classic golden-brown character from July through September. May and early September are reasonable alternatives; late September starts to carry early-storm risk, and October and November are consistently the hottest at 35 to 36°C in the east.
What about the monsoon wind everyone mentions?
It is real and it is in the same window as the best weather. June through August brings strong southerly winds along the south coast. For ceremonies on exposed clifftop or south-facing beach settings that has practical consequences for floral structures, canopies, and hair and makeup. It is consistent rather than gusty, which makes it plannable, and your planner should know which specific sites are naturally sheltered.
Can we see it green instead of golden?
Yes. Late April through early June gives you glossy hillsides, waterfalls at fuller volume and vivid tropical colour, with lower rain risk than January through March. It is a genuinely different island visually. If the golden-hills aesthetic is the reason you chose Sumba over Bali, know that you will not get it in that window.