Is it true that at the end of July in Bali, it's the dry season so I only need to pack summer clothes? I heard that evenings in Ubud can be chilly though.

I'm going to Ubud and Canggu for 5 nights and 6 days at the end of July, and I heard there's no need to worry about rain since it's the dry season. But I heard Ubud gets a bit cool in the evening, so I'm wondering if I should pack a light long-sleeve shirt. Do I also need an umbrella or raincoat just in case of sudden showers?