Palmarejo, Puerto Rico — Weather in September 2026

Climate Overview

Palmarejo, Puerto Rico in September has hot conditions, with highs reaching 29.3°C (85°F) and afternoons the warmest part of the day. Rain falls on about 23 days this month, totalling around 169 mm. Sea temperature reaches 30.6°C (87°F).

This month falls at the beginning of Autumn.

Temperatures remain fairly steady throughout September, with daily highs around 29°C (84°F).

Rainfall is heaviest during the middle of the month, while the first third tends to be drier.

Expect around 11.0h of sunshine at the start of September, decreasing to 10.3h by the end.

The warmest days tend to fall around the 2th, averaging 29.7°C (85°F).

Compared to August, this month is about 0°C cooler with 4 more rainy days.

Monthly September Averages

Temperature

29°C / 24°C

Feels Like

35°C / 28°C

Rain

23 days · 169 mm

Sunshine

10.5h / day

Humidity

86% — Very Muggy

Wind

17 km/h

Wind Direction

E (92°)

Gusts

34 km/h

Daylight

12.2 h

Cloud Cover

64%

Clear Sky Days

0.3

UV Index

8.4 — Very High

Sea Temperature

31°C

Dew Point

24°C — Oppressive

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

High Low

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:13

Daylight 12.2h

Sunset 18:27

What to Expect

Daytime temperatures around 29°C (85°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.

Recent yearly records for September have stayed close to the long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January best	27°C / 21°C	28°C / 22°C	11days (30 mm) Wet	10.4h Excellent	82% Humid	6.5 High	Excellent	View Details
February best	27°C / 21°C	28°C / 22°C	12days (44 mm) Wet	10.7h Excellent	80% Humid	7.5 Very High	Excellent	View Details
March best	27°C / 21°C	30°C / 22°C	13days (50 mm) Wet	10.9h Excellent	80% Humid	8.4 Very High	Excellent	View Details
April	28°C / 21°C	31°C / 24°C	18days (83 mm) Wet	11.3h Excellent	81% Humid	8.5 Very High	Wet	View Details
May	29°C / 23°C	33°C / 25°C	19days (84 mm) Wet	11.5h Excellent	83% Humid	8.7 Very High	Wet	View Details
June	29°C / 24°C	33°C / 26°C	16days (62 mm) Wet	11.9h Excellent	82% Humid	8.6 Very High	Fair	View Details
July	30°C / 24°C	33°C / 27°C	18days (90 mm) Wet	11.6h Excellent	82% Humid	8.6 Very High	Wet	View Details
August	30°C / 24°C	34°C / 27°C	19days (103 mm) Wet	11.1h Excellent	83% Humid	8.7 Very High	Wet	View Details
September	29°C / 24°C	35°C / 28°C	23days (169 mm) Wet	10.5h Excellent	86% Very Muggy	8.4 Very High	Wet	View Details
October	29°C / 23°C	34°C / 27°C	23days (141 mm) Wet	9.8h Good	88% Very Muggy	7.4 Very High	Wet	View Details
November	28°C / 23°C	32°C / 25°C	18days (120 mm) Wet	9.6h Good	87% Very Muggy	6.5 High	Wet	View Details
December best	27°C / 22°C	29°C / 24°C	12days (38 mm) Wet	10.2h Excellent	84% Humid	6.1 High	Excellent	View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketWaterproof shoesBreathable clothingSunscreen (SPF 30+)Sun hatSunglasses

Frequently Asked Questions

Expand all

Is September a good time to visit Palmarejo?

September is typically wet for visiting Palmarejo, with average highs of 29°C (85°F) and around 23 rainy days. Palmarejo, Puerto Rico in September has hot conditions, with highs reaching 29.3°C (85°F) and afternoons the warmest par

Does it rain a lot in Palmarejo in September?

Palmarejo typically sees around 23 rainy days in September with 169 mm (6.7 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Palmarejo in September?

Nights stay pleasantly warm in Palmarejo during September, around 24°C (75°F). Light evening wear is sufficient.

What should I pack for Palmarejo in September?

With highs of 29°C (85°F) and lows of 24°C (75°F) in September, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). Comfortable walking shoes are essential.

Is September among the best months weather-wise in Palmarejo?

September is not the most favourable month weather-wise in Palmarejo. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Palmarejo in September?

The average UV index in Palmarejo during September is 8 (very high). Strong sun protection is essential — SPF 50+, protective clothing, and avoid prolonged outdoor exposure during peak hours.

How many hours of daylight are there in Palmarejo in September?

Palmarejo gets approximately 12 hours of daylight per day in September, with around 11 hours of sunshine.

Does it snow in Palmarejo in September?

Snow is uncommon in Palmarejo during September based on 10-year climate averages.

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