Weather Data

Punta Cana Humidity & UV Index by Month

Updated: 2026-06-01

Executive summary

Punta Cana humidity sits at 74–80%, peaking in October. UV reaches 12 (Extreme) from May through August — sunburn possible in 8 minutes. SPF 50+ and 10am–3pm shade are non-negotiable.

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Key statistics

78%

Avg humidity

Peak UV (May–Jul)

8 min

Time to sunburn (UV 12)

SPF 50+

Recommended SPF

Why UV matters more than temperature

Punta Cana's UV index hits 12 (Extreme) from May through July — sea-breeze cooling masks the burn risk. WHO guidance: SPF 50+, reapply every 2h, wear UPF clothing 10am–3pm. Humidity peaks 80% in autumn — bring linen, drink 3L/day.

Punta Cana — humidity and UV index by month

Month	Humidity	UV Index (peak)
January	76%	9 (Very High)
February	75%	10 (Very High)
March	74%	11 (Extreme)
April	74%	12 (Extreme)
May	77%	12 (Extreme)
June	78%	12 (Extreme)
July	77%	12 (Extreme)
August	78%	11 (Extreme)
September	80%	11 (Extreme)
October	80%	9 (Very High)
November	79%	8 (Very High)
December	77%	8 (Very High)

Source: Weather Atlas, Climate-Data.org.

FAQ

Frequently asked questions

Is reef-safe sunscreen required?+

Strongly recommended for Saona and Catalina tours — operators often request mineral SPF (zinc / titanium dioxide). Some catamaran operators provide reef-safe spray.

Does humidity feel worse than the number?+

On the coast — no. Steady 15–20 km/h trade winds offset humidity. Inland (Higüey, La Romana) feels heavier.

Sources & methodology