May · Palau
Best time to visit Rock Islands in May Weather, crowds & prices
Weather in Rock Islands in May
Average temperature 27°C, 430 mm of rain, about 24 days with 6+ hours of sunshine and 88% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
3.1/10
Ranked #6 of 12 months
- Avg temp
- 27°C
- Rainfall
- 430 mm
- Humidity
- 88%
- Days with 6h+ sun
- 24
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Rock Islands scores 3.1/10 for sightseeing and cultural travel - an above-average month (#6 of 12). Expect around 27°C, 430 mm of rain, and roughly 24 days with 6+ hours of sunshine this month.
Palau's Rock Islands Southern Lagoon is a protected maze of limestone islets, reefs, lagoons, beaches, and marine sites explored by licensed boat, kayak, or dive operators.
May in Rock Islands — the hardest end of the year
May averages 27°C (81°F) and humidity near 88%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
430 mm makes this the wettest stretch of the year, though about 24 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.
It scores 3.1/10 here, 6th of 12 months, against 3.2/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Rock Islands in May?
- In May, Rock Islands averages 27°C, 430 mm of rain, and about 24 days with 6+ hours of sunshine. Its climate-comfort score is 3.1/10.
- Is May a good time to visit Rock Islands?
- May earns a 3.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Rock Islands in May?
- Expect about 430 mm of rain in May. Average humidity is 88% and there are about 24 days with 6+ hours of sunshine.
Curated in Rock Islands
Tickets & experiences
Things to do in Rock Islands
Rock Islands, Palau. Live activities and tours from GetYourGuide, matched to this destination.