Climate and monthly weather forecast
Adjuntas, PR

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The climate of Adjuntas

Nestled within the tropical region, Adjuntas, Puerto Rico, USA exhibits a 'Tropical monsoon' climate per the Köppen climate classification. It is characterized by consistently high temperatures and high relative humidity all year round, a typical attribute of an 'Am' climate zone.

Throughout the year, the temperature in Adjuntas ranges between 72°F (22.2°C) to 86.5°F (30.3°C) on average, signifying its tropical climate. A trend can be observed in the relatively small temperature variation, with the warmest months being June to September, where average high temperatures hover around 86°F (30°C). Minimum temperatures show little change from month to month, demonstrating a narrow range from 71.4°F (21.9°C) in March, to a peak of 76.6°F (24.8°C) from June to October.

Rainfall in Adjuntas exhibits somewhat regularity, with precipitation happening every month. Significant rainfall is received throughout the year; however, the wettest months are observed from August to October, receiving between 3.11" (79mm) and 3.58" (91mm) of precipitation monthly. The driest period occurs in the earlier months of the year with 0.71" (18mm) of rainfall in January.

The city sees little to no snowfall, indicating it's firmly within the tropical climatic zone. Sunshine hours range from a low of 7.1 hours in November to a high of 11.3 hours in June. This translates to bright, sunny days for most parts of the year.

The best time to visit Adjuntas

For those seeking to immerse themselves in the warmth of Adjuntas, consider visiting during the months of June to August. Coming in at a sun-soaked 11.3 to 13.2 daylight hours, coupled with a high temperature range of 85.8°F (29.9°C) to 86.5°F (30.3°C), it is undoubtedly the best time for sun-seekers and outdoor enthusiasts.

The worst time to visit Adjuntas

Traveling to Adjuntas during the months of August to October might be a bit challenging, as these months are typically the wettest period of the year with rainfall inches ranging from 3.11 to 3.58" (91mm). Additionally, the amount of sunshine received declines to around 9 hours, indicating cloudier skies and higher chances of rain.

Spring weather in Adjuntas

Spring in Adjuntas, from March to May, is bathed in warmth with an average temperature range of 73.2°F (22.9°C) to 84.7°F (29.3°C). Rainfall remains moderate, but begins to increase from 1.34" (34mm) in April to 2.05" (52mm) in May. With sunlight hours extending from 12.1 hours in March to 13 hours in May, spring reigns with pleasant warmth and long sunny days.

Summer weather in Adjuntas

Summer in Adjuntas, spanning June to August, is marked by the highest temperatures of the year, fluctuating between 76.5°F (24.7°C) to 86.5°F (30.3°C). Rainfall increases significantly averaging around 1.5" (38mm) in June to 3.11" (79mm) by August. Nevertheless, the city stays bright with 13.2 daylight hours in June, which slowly reduces to 12.7 hours in August.

Autumn weather in Adjuntas

Witnessing a dip in temperatures, autumn in Adjuntas, from September to November, displays cooler conditions with averages from 74.8°F (23.8°C) to 86.2°F (30.1°C). Rainfall hits its peak in September with 3.58" (91mm), and eases down to 2.48" (63mm) by November. The daylight hours decrease to 11.3 hours in November, still offering abundant sunshine for outdoor activities.

Winter weather in Adjuntas

Winter months in Adjuntas, December to February, continue to retain the tropical charm. Mild temperatures persist from 72°F (22.2°C) to 82.4°F (28°C), maintaining a comfortable level of warmth. Rainfall decreases substantially to 1.22" (31mm) in December and 0.83" (21mm) in February. Sunlight hours stay steady around 11 hours, adding a touch of cheer to the winter months.

Weather in January

January witnesses a gentle start to the year in Adjuntas, Puerto Rico, with a soothing balance between warmth and moisture. The range of climatic conditions—relative humidity of 77%, average high temperatures of 81.9°F (27.7°C), and average low temperatures of 72°F (22.2°C)—crafts an inviting weather. Weather in January »

Weather in February

Moving into February, Adjuntas continues to provide a pleasant climate for residents and visitors. The temperatures tend to be quite stable, with the highs and lows not moving far from the January averages. Although the relative humidity remains the same at 76%, rainfall increases slightly to 0.83" (21mm) across about 14.8 days. Weather in February »

Weather in March

As the city transitions to March, an increase in rainfall to 1.46" (37mm) distinguishes the month with precipitation events spreading across 18.4 days. Unlike the previous two months, March presents a slightly less sunny disposition, with sunshine lasting for just 8.7 hours a day. Weather in March »

Weather in April

April carries along the trend of warmer and wetter days in Adjuntas. This period registers an increase in high temperatures, touching 83.7°F (28.7°C), with lows also showing an uptick, situated at 73.2°F (22.9°C). In contrast to March, April's rainfall goes up to 1.34" (34mm) across 19.3 days, indicating more wet days in the month's tally. Weather in April »

Weather in May

In May, Adjuntas experiences an increase in temperatures, making the environment distinctly hotter than the preceding months. The high temperature climbs up to 84.7°F (29.3°C), easily the highest so far in the year. True to the season, rainfall jumps noticeably to 2.05" (52mm), which is distributed through 21.6 days of the month. Weather in May »

Weather in June

June ushers in summer, flagged by clear skies and longer daylight hours. Soaring temperatures set a fresh high of 85.8°F (29.9°C), indicative of the summertime heat. Simultaneously, night-time temperatures hover around 76.5°F (24.7°C) - the highest low temperature yet this year. Weather in June »

Weather in July

July parades the year's hottest conditions in Adjuntas. The mercury's upward trajectory ends with a peak of 86.4°F (30.2°C). Coinciding with the rise in temperatures, July also witnesses an increase in rainfall, reaching a considerable 2.2" (56mm) across 18.3 days. Weather in July »

Weather in August

August continues the trend of high temperature in Adjuntas, with the high and low temperatures almost matching those of July. On the other hand, rainfall swells to 3.11" (79mm). This increment in precipitation is also seen in the number of rainy days, increasing to 20.2. Weather in August »

Weather in September

September in Adjuntas is marked by a decline in temperatures, with the high temperature falling to 86.2°F (30.1°C). Despite this, the environmental conditions remain pleasant for outdoor activities, thanks to the 12.2 daylight hours. Weather in September »

Weather in October

October ushers a further reduction in temperature in Adjuntas. However, even with the slight cooling trend, the weather remains comfortably warm. The rainfall scale tilts back to 3.11" (79mm) over 21.9 days. The lengthier rainy spells, in unison with a relative humidity of 79%, provide a refreshing mode to the previously scorching summer months. Weather in October »

Weather in November

In November, Adjuntas experiences significantly cooler days, with the high temperature dropping to 83.8°F (28.8°C). This drop in thermal readings is matched by a decrease in rainfall to 2.48" (63mm) over 22.5 days, the highest number of rainy days for the year. Weather in November »

Weather in December

December brings the advent of winter to Adjuntas. The high temperature drops further to 82.4°F (28°C), introducing cool weather to the city. Rainfall recedes further to 1.22" (31mm), distributing over 16.3 days, bringing about a more dry and less humid climate, as signified by a relative humidity of 78%. Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Adjuntas?

January is the coldest month in Adjuntas, Puerto Rico, exhibiting average temperatures of 81.9°F (27.7°C) at the peak and 72°F (22.2°C) at the base.

What is the driest month in Adjuntas?

January is the month with the least rainfall in Adjuntas. Rain falls for 15.6 days and accumulates 0.71" (18mm) of precipitation.

How many days does it rain in Adjuntas?

In Adjuntas, Puerto Rico, during the entire year, the rain falls for 224.9 days and collects up to 23.58" (599mm) of precipitation.

When it does not snow in Adjuntas?

In Adjuntas, snow does not fall in January through August, October through December.

How many days does it snow in Adjuntas?

In Adjuntas, Puerto Rico, during the entire year, snow falls for 0.1 days.

What is the month with the lowest UV index in Adjuntas?

January through March, November and December, with an average maximum UV index of 6, are months with the lowest UV index.

What is the least humid month in Adjuntas?

The least humid month is March, with an average relative humidity of 75%.

When is the highest UV index in Adjuntas?

April through October, with an average maximum UV index of 7, are months with the highest UV index in Adjuntas.

When are the longest days in Adjuntas?

The month with the longest days in Adjuntas, Puerto Rico, is June, with an average of 13h and 12min of daylight.

What month has the most sunshine in Adjuntas?

With an average of 11.3h of sunshine, June has the most sunshine of the year.

What part of the year is the hottest in Adjuntas?

Adjuntas registers the average highest temperatures during August, with peaks of 86.5°F (30.3°C) and lows of 76.6°F (24.8°C).

What is the rainiest month in Adjuntas?

The month with the most rainfall is September, when the rain falls for 20.9 days and typically aggregates up to 3.58" (91mm) of precipitation.

When does it snow in Adjuntas?

September is the only month when snow falls in Adjuntas.

What is the snowiest month in Adjuntas?

The month with the most snowfall days is September, when snow falls for 0.1 days.

What is the most humid month in Adjuntas?

With an average relative humidity of 80%, November is the most humid month.

What is the month with the least sunshine in Adjuntas?

With an average of 7.1h of sunshine, November has the least sunshine of the year in Adjuntas.

What is the month with the shortest days in Adjuntas?

The month with the shortest days in Adjuntas, Puerto Rico, is December, with an average of 11h and 6min of daylight.

Is there Daylight Saving Time (DST) in Adjuntas?

Adjuntas, Puerto Rico, does not observe Daylight Saving Time (DST). AST timezone is used over the entire year.

Average temperature
Adjuntas, PR

Average temperature - Adjuntas, PR

The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is January (81.9°F).

The months with the highest average low temperature are July, August and October (76.6°F).
The coldest month (with the lowest average low temperature) is March (71.4°F).

Average pressure
Adjuntas, PR

Average pressure - Adjuntas, PR

The months with the highest atmospheric pressure are January and February (30.01"Hg).
The month with the lowest atmospheric pressure is October (29.89"Hg).

Average wind speed
Adjuntas, PR

Average wind speed - Adjuntas, PR

The windiest month (with the highest average wind speed) is July (8mph).
The calmest month (with the lowest average wind speed) is November (5.6mph).

Average humidity
Adjuntas, PR

Average humidity - Adjuntas, PR

The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is March (75%).

Average rainfall
Adjuntas, PR

Average rainfall - Adjuntas, PR

The wettest month (with the highest rainfall) is September (3.58").
The driest month (with the least rainfall) is January (0.71").

Average rainfall days
Adjuntas, PR

Average rainfall days - Adjuntas, PR

The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is February (14.8 days).

Average snowfall days
Adjuntas, PR

Average snowfall days - Adjuntas, PR

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

Average daylight / Average sunshine
Adjuntas, PR

Average daylight / Average sunshine - Adjuntas, PR

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is November (Average sunshine: 7h and 6min).

Average sunshine days
Adjuntas, PR

Average sunshine days - Adjuntas, PR

The month with the most sunshine days is June (12.2 days).
The month with the least sunshine days is November (5.1 days).

Average UV index
Adjuntas, PR

Average UV index - Adjuntas, PR

The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 6).

Average visibility
Adjuntas, PR

Average visibility - Adjuntas, PR

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Adjuntas, Puerto Rico, USA

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