7.8 /10
Excellent

May is an excellent month in Chalco

Climate Overview

Chalco, United States in May has warm conditions, with highs averaging 23.2°C (74°F). Rain falls on about 12 days this month. Temperatures drop noticeably between day and night.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 20°C (69°F) at the start to 25°C (78°F) by month's end.

May sees fairly even rainfall, totalling about 134 mm across the month.

Expect around 9.8h of sunshine at the start of May, increasing to 10.9h by the end.

The warmest days tend to fall around the 31th, averaging 25.8°C (78°F).

Compared to April, this month is about 5°C warmer with 3 more rainy days. Temperatures will rise further into June.

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Monthly May Averages

Temperature
23°C / 13°C
Feels Like
22°C / 11°C
Rain
12 days · 134 mm
Sunshine
9.9h / day
Humidity
66% — Humid
Wind
22 km/h
Wind Direction
ESE (117°)
Gusts
43 km/h
Daylight
14.5 h
Cloud Cover
57%
Clear Sky Days
5.6
UV Index
7 — High
Dew Point
11°C — Comfortable
Moon Phase
Waxing Gibbous · 66%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

32°C 28°C 24°C 20°C 16°C 12°C 8°C 4°C 151015202531
HighLow

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 8 mm 10 mm 151015202531
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202531
Sunshine

Daily Wind Speed

0 6 12 18 24 30 151015202531
Wind Speed
Sun Position
Sunrise 06:08
Daylight 14.5h
Sunset 20:37

What to Expect

Daytime temperatures around 23°C (74°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain usually comes in shorter passing showers rather than all-day rain.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Poor
Temp
1°C / -7°C
Feels Like
-3°C / -13°C
Rain
5days (33 mm) Good
Sun
6.3h Fair
Humidity
70% Muggy
UV
2.7 Moderate
Snow Days
7days
February
Poor
Temp
5°C / -6°C
Feels Like
0°C / -12°C
Rain
5days (25 mm) Good
Sun
7.9h Good
Humidity
64% Muggy
UV
3.9 Moderate
Snow Days
6days
March
Poor
Temp
13°C / 1°C
Feels Like
9°C / -4°C
Rain
9days (81 mm) Wet
Sun
8.1h Good
Humidity
64% Muggy
UV
4.9 Moderate
Snow Days
3days
April
Fair
Temp
18°C / 6°C
Feels Like
15°C / 2°C
Rain
9days (78 mm) Wet
Sun
9.5h Good
Humidity
60% Moderate
UV
6.2 High
Snow Days
1days
May best
Excellent
Temp
23°C / 13°C
Feels Like
22°C / 11°C
Rain
12days (134 mm) Wet
Sun
9.9h Good
Humidity
66% Muggy
UV
7 High
June best
Excellent
Temp
30°C / 19°C
Feels Like
32°C / 20°C
Rain
9days (108 mm) Wet
Sun
12.6h Excellent
Humidity
64% Muggy
UV
7.6 Very High
July best
Excellent
Temp
31°C / 21°C
Feels Like
34°C / 22°C
Rain
9days (88 mm) Wet
Sun
12.4h Excellent
Humidity
69% Muggy
UV
7.6 Very High
August best
Excellent
Temp
29°C / 20°C
Feels Like
32°C / 21°C
Rain
9days (96 mm) Wet
Sun
11.4h Excellent
Humidity
70% Muggy
UV
7 High
September best
Excellent
Temp
27°C / 17°C
Feels Like
27°C / 16°C
Rain
8days (72 mm) Wet
Sun
10.1h Excellent
Humidity
65% Muggy
UV
5.9 High
October
Good
Temp
19°C / 9°C
Feels Like
16°C / 6°C
Rain
7days (73 mm) Good
Sun
8.1h Good
Humidity
61% Muggy
UV
4.2 Moderate
Snow Days
1days
November
Poor
Temp
11°C / 2°C
Feels Like
7°C / -3°C
Rain
5days (33 mm) Good
Sun
7h Good
Humidity
65% Muggy
UV
2.8 Moderate
Snow Days
2days
December
Poor
Temp
5°C / -4°C
Feels Like
0°C / -9°C
Rain
4days (35 mm) Good
Sun
6.5h Fair
Humidity
68% Muggy
UV
2.3 Moderate
Snow Days
5days
Month Temp Feels Like Rain Sun Humidity UV Status Details
January 1°C / -7°C -3°C / -13°C 5days (33 mm) Good 6.3h Fair 70% Muggy 2.7 Moderate Poor View Details
February 5°C / -6°C 0°C / -12°C 5days (25 mm) Good 7.9h Good 64% Muggy 3.9 Moderate Poor View Details
March 13°C / 1°C 9°C / -4°C 9days (81 mm) Wet 8.1h Good 64% Muggy 4.9 Moderate Poor View Details
April 18°C / 6°C 15°C / 2°C 9days (78 mm) Wet 9.5h Good 60% Moderate 6.2 High Fair View Details
May best 23°C / 13°C 22°C / 11°C 12days (134 mm) Wet 9.9h Good 66% Muggy 7 High Excellent View Details
June best 30°C / 19°C 32°C / 20°C 9days (108 mm) Wet 12.6h Excellent 64% Muggy 7.6 Very High Excellent View Details
July best 31°C / 21°C 34°C / 22°C 9days (88 mm) Wet 12.4h Excellent 69% Muggy 7.6 Very High Excellent View Details
August best 29°C / 20°C 32°C / 21°C 9days (96 mm) Wet 11.4h Excellent 70% Muggy 7 High Excellent View Details
September best 27°C / 17°C 27°C / 16°C 8days (72 mm) Wet 10.1h Excellent 65% Muggy 5.9 High Excellent View Details
October 19°C / 9°C 16°C / 6°C 7days (73 mm) Good 8.1h Good 61% Muggy 4.2 Moderate Good View Details
November 11°C / 2°C 7°C / -3°C 5days (33 mm) Good 7h Good 65% Muggy 2.8 Moderate Poor View Details
December 5°C / -4°C 0°C / -9°C 4days (35 mm) Good 6.5h Fair 68% Muggy 2.3 Moderate Poor View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.

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

Packing List

UmbrellaWaterproof jacketSunscreen (SPF 30+)SunglassesComfortable walking shoes

Frequently Asked Questions

May is typically excellent for visiting Chalco, with average highs of 23°C (74°F) and around 12 rainy days. Chalco, United States in May has warm conditions, with highs averaging 23.2°C (74°F). Rain falls on about 12 days this m
Chalco typically sees around 12 rainy days in May with 134 mm (5.3 in) of total rainfall. Pack a waterproof jacket.
Evenings in Chalco during May are mild at 13°C (55°F). A light cardigan is usually enough.
With highs of 23°C (74°F) and lows of 13°C (55°F) in May, we recommend: Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. Comfortable walking shoes are essential.
Yes, May offers some of the best weather conditions in Chalco with comfortable temperatures and lower chances of rain.
The average UV index in Chalco during May is 7 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Chalco gets approximately 15 hours of daylight per day in May, with around 10 hours of sunshine.
Snow is uncommon in Chalco during May based on 10-year climate averages.

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