Weather StoryAlmanac, microseasons, and the day's weather story.

Carolina, Puerto Rico Weather

Easterly waves thread the Atlantic. Day 86 of spring. Read this microseason across nine climate regions →

Carolina weather forecast — hour by hour, 7-day outlook, NOAA radar

Carolina, PR
Saturday, June 13 at 4:32 AM
79
°
Mostly Clear
Feels like
86°
Humidity
82%
Wind
5 mph
Sunrise
1:47 AM
Sunset
3:00 PM
Carolina, PR
Hour by hour · 24h
24-Hour ForecastCarolina, PR: 24-hour forecast. Temperatures range from 79 to 91 degrees Fahrenheit.
L 79°H 91°
Carolina, PR
7-day forecast
  1. Today
    Jun 13
    Overcast
    —
    —
    91°79°—
  2. Sunday
    Jun 14
    Light Drizzle
    27%
    0.01″
    90°78°-1°
  3. Monday
    Jun 15
    Drizzle
    33%
    0.06″
    90°78°0°
  4. Tuesday
    Jun 16
    Drizzle
    39%
    0.11″
    90°77°0°
  5. Wednesday
    Jun 17
    Light Drizzle
    35%
    0.08″
    90°77°0°
  6. Thursday
    Jun 18
    Light Drizzle
    57%
    0.02″
    90°76°0°
  7. Friday
    Jun 19
    Light Drizzle
    47%
    —
    88°79°-2°
Carolina, PR
Next 24 hours · Mild now
HOT 90°76°85°94°12a6a12p6pnow 79°high 91°low 79°
Carolina, PR
Anemometer · 24h winds · from true
NESW
From · True
ESE
118° · backing 60°
Direction
ESE
118°
Sustained
5
mph
Gust
10
mph
Peak 24h
22
avg 7
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 7 · pk 22 @ 12:00p
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 266SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 60° from the ese.
Carolina, PR
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1014.9
-0.6 mb in 3h · falling · 29.97 inHg
Now
1014.9
mb
3h
-0.6
mb
12h
-0.1
mb
24h
+0.2
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1015–1017
1010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY-21h-18h-15h-12h-9h-6h-3h-24hNOW1016.81014.51014.7
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
Carolina, PR
Air quality
50
AQI
Good
→-4 in 6h

AQI 50 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 6.5 µg/m³ (AQI 36), ratio 0.49 with 5 mph wind — characteristic of long-range haze transport rather than a local source.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERGood
6.5μg/m³
PM 10Good
13μg/m³
NO₂Good
1μg/m³
OzoneGood
41μg/m³
UV IndexLow
0.0

What's driving it

PM × Wind × Precip

PM2.5 at 6.5 µg/m³ (AQI 36), ratio 0.49 with 5 mph wind — characteristic of long-range haze transport rather than a local source.

PM2.5/PM10
0.49
Wind
light
Recent rain
0h in last 6h
Pattern
transport

Trends

Seven days of AQI and PM2.5.

Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).

7-DAY AQI TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³300
Carolina, PR
Sky cover · visibility · 24h
Cloud cover
24%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
54.3mi
UNLIMITED
95 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
08:32 UTC · Carolina, PR · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
08:32 UTC · Carolina, PR · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Carolina, PR
Satellite · infrared · animated
Carolina, PR
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Carolina, PR
Almanac · Saturday, June 13
Cut your thistles before St. John, you will have two instead of one.
Civil dawn
5:24 AM
Sunrise
1:47 AM
Daylight
13h 13m
Sunset
3:00 PM
Civil dusk
7:26 PM
Planting note
Prune spring-blooming shrubs after flowers fade.
Carolina, PR
The moon
Waning Crescent
4% illuminated
Moonrise
4:00 AM
Moonset
5:50 PM
In sign
♉︎ Taurus
Carolina, PR
Microseason
Jun 11–15

Easterly waves thread the Atlantic

bird
Jan 145% of the yearDec 31

Read this microseason across nine climate regions →

Carolina at a glance

  • Today vs. normal: 18°F below the seasonal normal for this latitude
  • Last frost: December 7 (climatological average for this latitude)
  • Microseason: Jun 11–15
  • Planting window: Prune spring-blooming shrubs after flowers fade.

15-Day Forecast — Carolina

  1. Sat91°79°6%
  2. Sun90°78°27%
  3. Mon90°78°33%
  4. Tue90°77°39%
  5. Wed90°77°35%
  6. Thu90°76°57%
  7. Fri88°79°47%
  8. Sat86°79°65%
  9. Sun91°78°47%
  10. Mon90°79°37%
  11. Tue87°79°26%
  12. Wed87°78°46%
  13. Thu91°78°33%
  14. Fri90°79°22%
  15. Sat87°76°29%

Forecast data from Open-Meteo (CC BY 4.0).

Live wind & temperature near Carolina

Right now in the garden

Peak growing season

As of June 13, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

January 1–5: The year turns in trade winds.January 6–10: Reefs reflect clear winter light.January 11–15: Mangrove buds swell with green.January 16–20: Hibiscus opens in January sun.January 21–25: Early-blooming aster brings gold.January 26–31: Last cold breath, green rising.February 1–5: Plumeria and ceiba crown the canopy.February 6–10: Coral spawn timing aligns with moon.February 11–15: Morning dew lingers on new leaves.February 16–20: Trade-wind rhythm softens slightly.February 21–25: Humidity breaks the dry season spell.February 26–28: Mist rises where rain falls inland.March 1–5: Green thickens in every direction.March 6–10: Hidden creatures awaken in dampness.March 11–15: Fruiting cycles deepen as rains persist.March 16–20: Wings emerge from green.March 21–25: Light holds the horizon.March 26–31: Coral blooms begin.April 1–5: Thunder rolls across the sea.April 6–10: Migrants pour southward.April 11–15: Green deepens in all things.April 16–20: Rain paints the sky.April 21–25: Green shoots rise from the shore.April 26–30: Heat breaks the last restraint.May 1–5: Lei Day—flowers crown the islands.May 6–10: Rain falls on greening grain.May 11–15: Green life breaks upward.May 16–20: Flowers spill across the islands.May 21–25: Summer arrives in thunder.May 26–31: Frogs sing the summer in.June 1–5: First trades stir the ceiba canopy.June 6–10: Afternoon showers claim the ritual.June 11–15: Easterly waves thread the Atlantic.June 16–20: Reef polyps synchronize in moonlight.June 21–25: The sun reaches its zenith turn.June 26–30: Lightning bugs dance above the flooded lowlands.July 1–5: Midyear heat — the wet season grip.July 6–10: Warm breeze across the mangrove maze.July 11–15: Storm surge begins its rhythm.July 16–20: Juvenile raptors test the thermals.July 21–25: The earth releases its breath — humidity peaks.July 26–31: Fruits swell in the tropical canopy.August 1–5: August opens — storms become routine.August 6–10: Autumn whispers in the trade wind shift.August 11–15: Cool winds find their path again.August 16–20: Cicadas hum through the heat.August 21–25: Trade winds gather strength.August 26–31: Hurricane season intensifies.September 1–5: Peak storm season dawns.September 6–10: Wet-season rains peak.September 11–15: Mid-season storm lull.September 16–20: Equinox approaches.September 21–25: Storm intensity ebbs slightly.September 26–30: Late-season storms persist.October 1–5: Easterly waves train across the basin.October 6–10: Hurricane season's second peak.October 11–15: Seasonal wind shift emerges.October 16–20: Atlantic storms retreat.October 21–25: Trade winds solidify.October 26–31: Dry season's arrival.November 1–5: Last storms clear the horizon.November 6–10: Dry season takes hold.November 11–15: Migratory arrivals from the north.November 16–20: The emerald deepens.November 21–25: Dust veil settles.November 26–30: Harvest calm descends.December 1–5: Deep dry season opens.December 6–10: Winter trades blow strong.December 11–15: Solstice approaches in green silence.December 16–20: The sun turns again.December 21–25: Solstice—renewal in stillness.December 26–31: Year's end in tropical stillness.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · June 11–15

Easterly waves thread the Atlantic

Low-pressure systems track westward. Cloud streets align with the trades. Waves rise to chest height. Mangrove snails cluster on aerial roots.

Day 164 of 365 · Wedge 33 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
Februarylettuce, peas, spinach, radishes—
Marchlettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Apriltomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
June—lettuce, peas, radishes
July—tomatoes, beans, summer squash
August—tomatoes, beans, summer squash
September—tomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
Novemberfall brassicas, garlic (overwinter), carrots—
December——

A year in weather

The year in Carolina tops out in August (~82°F) and dips lowest in January (~76°F), with October wettest at 4.5 inches and February driest at 1.2 inches.

MonthMean tempPrecipRainy days
January76°1.6″28
February76°1.2″26
March77°1.6″26
April78°2.6″27
May80°3.9″30
June81°2.5″28
July82°2.4″30
August82°3.5″30
September81°4.1″29
October80°4.5″31
November78°3.6″29
December77°2.6″30

Regional context

Carolina's climate, from NOAA NCEI 1991-2020 station normals, pairs 76°F Januarys with 82°F Julys — a 6°F swing. About 34.2 inches of precipitation falls over roughly 343 days a year.

Carolina's rain peaks in summer: October brings 4.5 inches over 30.7 thunderstorm-fed days, while February sees just 1.2 inches across 25.5 days under cooler, drier air. That summer-storm rhythm groups Carolina with places like Trujillo Alto, PR, Santa Bárbara, PR and Caño Martin Peña, PR.

Carolina rarely sees a hard freeze — its coldest month sits near 76°F — so planting spans most of the calendar. Heat peaks in August around 82°F, which confines cool-season crops to the shoulders of summer. Carolina's coastal lots stay 4-7°F milder overnight than Carolina's inland parcels.

Similar climates: Trujillo Alto, PR, Santa Bárbara, PR, Caño Martin Peña, PR, San Juan, PR, Valle Hill, PR.

Naturalist notes

By late May, flame trees (Delonix regia) send out their first scarlet blooms across the coastal lowlands, a reliable signal that the wet season is about to intensify.

Gray kingbirds return to open perches along roadsides and power lines in April and May, their sharp calls marking the onset of the summer breeding period.

Frequently asked

When does it freeze in Carolina?
In Carolina, expect the last spring frost near mid-February; Carolina's first autumn frost comes around mid-December.
What is the rainy season in Carolina?
Rainfall in Carolina peaks in October near 4.5 inches, out of about 34 inches annually.
What is the warmest month in Carolina?
Carolina peaks in August, when the mean runs near 82°F.
What is the coldest month in Carolina?
January is Carolina's coldest month, averaging about 76°F.
When can I start a vegetable garden in Carolina?
In Carolina, sow peas and hardy greens around mid-February; Carolina's tomatoes and peppers wait two weeks more.
How many rainy days does Carolina get?
Carolina averages about 343 days with measurable rain or snow each year.
What hardiness zone is Carolina?
With January around 76°F, Carolina's zone reflects that minimum — the USDA ZIP map confirms Carolina's band.
What is the 10-day forecast for Carolina?
Carolina's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Carolina?
See this week's day-by-day rain chances for Carolina in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Carolina?
Current conditions for Carolina and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Carolina forecast updated?
The Carolina forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Carolina?
Day length in Carolina peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
How accurate is the weather forecast for Carolina?
The next few days in Carolina's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Carolina, Puerto Rico, the varied climate runs from about 76°F in January to 82°F in July, a 6°F seasonal range.

In a typical year Carolina records about 34 inches of precipitation on around 343 days.

From 18.4°N, Carolina sees a 6°F seasonal swing that governs Carolina's planting and frost windows.

All cities in Puerto Rico →

San Juan, PR weather →

ZIP codes in Carolina

  • 00979
  • 00987
  • 00982
  • 00983
  • 00985
  • 00981
  • 00984
  • 00986
  • 00988

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.