4.7 /10
Fair

April is a fair month in Old Saybrook

Climate Overview

Old Saybrook, United States in April has mild conditions, with highs averaging 12.5°C (55°F) and noticeably cooler mornings. Rain falls on about 11 days this month. Sea temperature stays cool at 8.3°C (47°F).

This month falls at the middle of Spring.

Daily highs in April gradually rise from around 10°C (50°F) at the start to 14°C (57°F) by month's end.

April sees fairly even rainfall, totalling about 106 mm across the month.

Expect around 7.4h of sunshine at the start of April, increasing to 8.7h by the end.

The warmest days tend to fall around the 30th, averaging 14.3°C (58°F).

Compared to March, this month is about 4°C warmer with 1 more rainy days. Temperatures will rise further into May.

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Monthly April Averages

Temperature
13°C / 6°C
Feels Like
10°C / 3°C
Rain
11 days · 107 mm
Sunshine
8.8h / day
Humidity
71% — Humid
Wind
19 km/h
Wind Direction
W (271°)
Gusts
46 km/h
Daylight
13.3 h
Cloud Cover
63%
Clear Sky Days
3.2
UV Index
5.3 — High
Sea Temperature
8°C
Dew Point
4°C — Dry
Moon Phase
Waxing Gibbous · 61%
Snow Days
1 days · 2.6 cm
Frost Days
1 days

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

20°C 16°C 12°C 8°C 4°C 0°C -4°C 151015202530
High Low

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 8 mm 151015202530
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202530
Sunshine

Daily Wind Speed

0 6 12 18 24 30 151015202530
Wind Speed
Sun Position
Sunrise 06:10
Daylight 13.3h
Sunset 19:30

Compare Months

January
Poor
Temp
4°C / -1°C
Feels Like
0°C / -6°C
Rain
9days (90 mm) Wet
Sun
6.1h Fair
Humidity
69% Muggy
UV
2.3 Moderate
Snow Days
6days
February
Poor
Temp
5°C / -1°C
Feels Like
1°C / -5°C
Rain
10days (85 mm) Wet
Sun
6.8h Fair
Humidity
71% Muggy
UV
3.3 Moderate
Snow Days
7days
March
Poor
Temp
8°C / 2°C
Feels Like
5°C / -3°C
Rain
10days (99 mm) Wet
Sun
8.3h Good
Humidity
68% Muggy
UV
4.5 Moderate
Snow Days
4days
April
Fair
Temp
13°C / 6°C
Feels Like
10°C / 3°C
Rain
11days (107 mm) Wet
Sun
8.8h Good
Humidity
71% Muggy
UV
5.3 High
Snow Days
1days
May
Good
Temp
17°C / 11°C
Feels Like
17°C / 9°C
Rain
12days (106 mm) Wet
Sun
9.8h Good
Humidity
77% Humid
UV
6.1 High
June best
Excellent
Temp
23°C / 17°C
Feels Like
24°C / 17°C
Rain
10days (82 mm) Wet
Sun
11.2h Excellent
Humidity
78% Humid
UV
7.1 Very High
July best
Excellent
Temp
27°C / 21°C
Feels Like
30°C / 23°C
Rain
13days (128 mm) Wet
Sun
11.5h Excellent
Humidity
80% Humid
UV
7.2 Very High
August best
Excellent
Temp
26°C / 21°C
Feels Like
29°C / 22°C
Rain
11days (96 mm) Wet
Sun
10.7h Excellent
Humidity
78% Humid
UV
6.5 High
September best
Excellent
Temp
23°C / 17°C
Feels Like
24°C / 17°C
Rain
10days (108 mm) Wet
Sun
8.8h Good
Humidity
77% Humid
UV
5.2 High
October best
Good
Temp
18°C / 12°C
Feels Like
17°C / 11°C
Rain
10days (107 mm) Wet
Sun
7.4h Good
Humidity
74% Muggy
UV
4 Moderate
November
Fair
Temp
12°C / 6°C
Feels Like
9°C / 2°C
Rain
8days (80 mm) Wet
Sun
6.8h Fair
Humidity
69% Muggy
UV
2.8 Moderate
Snow Days
1days
December
Poor
Temp
6°C / 1°C
Feels Like
3°C / -3°C
Rain
10days (128 mm) Wet
Sun
5.7h Fair
Humidity
71% Muggy
UV
2 Low
Snow Days
5days
Month Temp Feels Like Rain Sun Humidity UV Status Details
January 4°C / -1°C 0°C / -6°C 9days (90 mm) Wet 6.1h Fair 69% Muggy 2.3 Moderate Poor View Details
February 5°C / -1°C 1°C / -5°C 10days (85 mm) Wet 6.8h Fair 71% Muggy 3.3 Moderate Poor View Details
March 8°C / 2°C 5°C / -3°C 10days (99 mm) Wet 8.3h Good 68% Muggy 4.5 Moderate Poor View Details
April 13°C / 6°C 10°C / 3°C 11days (107 mm) Wet 8.8h Good 71% Muggy 5.3 High Fair View Details
May 17°C / 11°C 17°C / 9°C 12days (106 mm) Wet 9.8h Good 77% Humid 6.1 High Good View Details
June best 23°C / 17°C 24°C / 17°C 10days (82 mm) Wet 11.2h Excellent 78% Humid 7.1 Very High Excellent View Details
July best 27°C / 21°C 30°C / 23°C 13days (128 mm) Wet 11.5h Excellent 80% Humid 7.2 Very High Excellent View Details
August best 26°C / 21°C 29°C / 22°C 11days (96 mm) Wet 10.7h Excellent 78% Humid 6.5 High Excellent View Details
September best 23°C / 17°C 24°C / 17°C 10days (108 mm) Wet 8.8h Good 77% Humid 5.2 High Excellent View Details
October best 18°C / 12°C 17°C / 11°C 10days (107 mm) Wet 7.4h Good 74% Muggy 4 Moderate Good View Details
November 12°C / 6°C 9°C / 2°C 8days (80 mm) Wet 6.8h Fair 69% Muggy 2.8 Moderate Fair View Details
December 6°C / 1°C 3°C / -3°C 10days (128 mm) Wet 5.7h Fair 71% Muggy 2 Low Poor View Details

What to Wear

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

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

Packing List

Layered clothingLight jacketUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

April is typically fair for visiting Old Saybrook, with average highs of 13°C (55°F) and around 11 rainy days. Old Saybrook, United States in April has mild conditions, with highs averaging 12.5°C (55°F) and noticeably cooler morni
Old Saybrook typically sees around 11 rainy days in April with 107 mm (4.2 in) of total rainfall. Pack a waterproof jacket.
Nights in Old Saybrook during April are cool at around 6°C (43°F). Bring a jacket or sweater for evenings.
With highs of 13°C (55°F) and lows of 6°C (43°F) in April, we recommend: Layered clothing, Light jacket, Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.
April is not the most favourable month weather-wise in Old Saybrook. Consider visiting during months with milder temperatures or less rainfall for a better experience.
The average UV index in Old Saybrook during April is 5 (moderate). Sunscreen and sunglasses are recommended during midday hours.
Old Saybrook gets approximately 13 hours of daylight per day in April, with around 9 hours of sunshine.
Yes, Old Saybrook typically sees around 1 snow days in April with roughly 3 cm (1 in) of snowfall.

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