Frost Dates for SAN JUAN NS, Puerto Rico

Elevation: 41 m

Frost Dates

This location never reaches freezing temperatures, so you can plant year-round!

In tropical and subtropical climates, the main challenge isn’t frost — it’s heat and humidity. Learn more about gardening in tropical climates.

18.47°N, 66.12°W © OpenStreetMap

USDA Hardiness Zone

Zone 13b

Avg. annual minimum: 18 to 21°C

Learn more

Köppen Climate

Af Tropical Rainforest

Hot and wet year-round with no dry season. Ideal for tropical crops like bananas, mangoes, and cocoa. Gardening is possible all year, but high humidity can increase disease pressure.

Köppen climate map

Temperature

20° 25° 30° 35°

24°

Jan

24°

Feb

25°

Mar

25°

Apr

26°

May

27°

Jun

27°

Jul

27°

Aug

27°

Sep

26°

Oct

25°

Nov

24°

Dec

Avg High Avg Temp Avg Low

Temperature table

Average monthly temperatures (°C)
Month	Avg High	Avg Temp	Avg Low
January	28°	24°	21°
February	28°	24°	21°
March	29°	25°	21°
April	30°	25°	22°
May	30°	26°	23°
June	31°	27°	24°
July	31°	27°	24°
August	31°	27°	25°
September	31°	27°	24°
October	30°	26°	24°
November	29°	25°	23°
December	28°	24°	22°

Precipitation

0 mm 50 mm 100 mm

41 mm

Jan

13 mm

Feb

38 mm

Mar

79 mm

Apr

104 mm

May

74 mm

Jun

74 mm

Jul

89 mm

Aug

119 mm

Sep

112 mm

Oct

107 mm

Nov

51 mm

Dec

Precipitation table

Average monthly precipitation (millimeters)
Month	Precipitation
January	41
February	13
March	38
April	79
May	104
June	74
July	74
August	89
September	119
October	112
November	107
December	51

Sunrise / Sunset

Jan: 6:30 AM – 5:30 PM · 11h 00m

Feb: 6:18 AM – 5:42 PM · 11h 24m

Mar: 6:04 AM – 5:56 PM · 11h 52m

Apr: 5:47 AM – 6:13 PM · 12h 25m

May: 5:34 AM – 6:26 PM · 12h 52m

Jun: 5:27 AM – 6:33 PM · 13h 06m

Jul: 5:30 AM – 6:30 PM · 13h 01m

Aug: 5:41 AM – 6:19 PM · 12h 38m

Sep: 5:57 AM – 6:03 PM · 12h 06m

Oct: 6:13 AM – 5:47 PM · 11h 34m

Nov: 6:27 AM – 5:33 PM · 11h 07m

Dec: 6:33 AM – 5:27 PM · 10h 54m

Daylight Longest: 13h 07m · Shortest: 10h 53m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	6:30 AM	5:30 PM	11h 00m
February	6:18 AM	5:42 PM	11h 24m
March	6:04 AM	5:56 PM	11h 52m
April	5:47 AM	6:13 PM	12h 25m
May	5:34 AM	6:26 PM	12h 52m
June	5:27 AM	6:33 PM	13h 06m
July	5:30 AM	6:30 PM	13h 01m
August	5:41 AM	6:19 PM	12h 38m
September	5:57 AM	6:03 PM	12h 06m
October	6:13 AM	5:47 PM	11h 34m
November	6:27 AM	5:33 PM	11h 07m
December	6:33 AM	5:27 PM	10h 54m

Nearby Stations

SAN JUAN CITY, Puerto Rico TOA BAJA LEVITTOWN, Puerto Rico RIO PIEDRAS, Puerto Rico RIO PIEDRAS EXP STN, Puerto Rico SAN JUAN L M MARIN AP, Puerto Rico WFO SAN JUAN, Puerto Rico

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