Yearly & Monthly weather

The climate of Toa Alta

Toa Alta, a tropical domain in Puerto Rico, USA, falls within the Am - Tropical monsoon categorization of the Köppen climate classification. A prominent characteristic of the climatic profile is the relative uniformity of high temperatures, ranging from 79.9°F (26.6°C) in January to a steady ascent peaking at 85.5°F (29.7°C) in August. In contrast, low temperatures vary between 73°F (22.8°C) in March to 78.4°F (25.8°C) between August to October.

The relative humidity hovers around the 78% mark throughout the year, with minor deviations. Rainfall distribution is relatively uneven, lowest in February with 0.94" (24mm) and spiking to 3.82" (97mm) in October. Consequently, the number of rainfall days also increases from 14.2 days in January and February to a maximum of 24 days in October.

Distinct weather patterns emerge when focusing on daylight hours and sunshine duration. Daylight hours extend from 11.2 hours in January, reaching a zenith of 13.2 hours by June, and then reducing gradually. Correspondingly, sunshine duration ranges from 6.7 hours in November to 10.8 hours between May and June.

Wind speeds are another variable to consider. Average wind speeds navigate from a low of 6.8mph (10.9km/h) in October to a high of 10mph (16.1km/h) in July. Meanwhile, the maximum wind speed oscillates between 7.5mph (12.1km/h) to 10.7mph (17.2km/h) and gust speeds from 10.1mph (16.3km/h) to 14.4mph (23.2km/h) during the same period.

The best time to visit Toa Alta

The optimal time for a visit to Toa Alta would likely fall between May and June. This period aligns with the longest daylight hours extending up to 13.2 hours and the highest sunshine duration at 10.8 hours per day. Although a moderate level of rain is expected around 1.77" (45mm) to 2.01" (51mm) across 15.8 to 16.8 days respectively, temperatures remain relatively high, swinging from 75.7°F (24.3°C) to 77.5°F (25.3°C) during nights and from 82.6°F (28.1°C) to 84.2°F (29°C) during days.

The worst time to visit Toa Alta

A less favorable time for a visit might be the late autumn period, particularly November. November is characterized by the year's lowest amount of daylight, at 11.3 hours, and sunshine, at 6.7 hours per day. Although temperatures remain reasonably high reaching 83.1°F (28.4°C) during the day and 76.6°F (24.8°C) at night, the number of rainy days can be a hindrance. With 22.9 rainy days on average in November and rainfall levels at 3.23" (82mm), potential visitors should consider possible interruptions to outdoor activities.

Spring weather in Toa Alta

Spring in Toa Alta, which spans from March to May, is marked by gradually increasing temperatures. Daytime highs rise from 80.2°F (26.8°C) to 82.6°F (28.1°C), while nighttime lows increase from 73°F (22.8°C) to 75.7°F (24.3°C). Reflecting the rise in temperature, daylight hours and sunshine also see an upward trend, growing from 12.1 hours to 13 hours and 8.5 hours to 10.8 hours respectively. Despite the pleasant temperatures and increased daylight, spring does see an upswing in rainfall moving from 2.01" (51mm) to 3.43" (87mm), and the number of rainy days increase from 17 to 22.7 days.

Summer weather in Toa Alta

Summer in Toa Alta witnesses a further rise in temperatures, hitting a peak at 84.7°F (29.3°C) in July during the day, and 78.3°F (25.7°C) during the night. Daylight ranges between 13.2 hours to 12.7 hours, while sunshine lasts for about 10.8 hours in June slowly reducing to 9.1 hours by August. Rainfall stays constant at around 2.01" (51mm) in July, then increases to 2.44" (62mm) by August. Concurrently, the number of rainy days also sees an upward twitch from 15.8 to 19.7 days.

Autumn weather in Toa Alta

Autumn brings a slight lowering of temperatures, going from 85.1°F (29.5°C) in September to 83.1°F (28.4°C) in November during the day, and equivalent dip from 78.4°F (25.8°C) to 76.6°F (24.8°C) at night. Daylight hours and sunshine follow a declining trajectory with daylight shrinking from 12.2 hours to 11.3 hours, and sunshine tapering from 9.4 hours to 6.7 hours per day. However, there is an abrupt rise in rainfall from 3.62" (92mm) to 3.23" (82mm), and rainy day count increasing from 20.4 to 22.9 days.

Winter weather in Toa Alta

Winter in Toa Alta sees a further decline in temperatures, with daytime highs tapering from 84.7°F (29.3°C) in December to 79.9°F (26.6°C) in January, before climbing back to 81.1°F (27.3°C) in February. Nights during winter witness temperatures moving from 75.2°F (24°C) in December to 73.6°F (23.1°C) in January before rising to 73.4°F (23°C). Correspondingly, daylight hours shrink to 11 hours and sunshine duration drops to 6.8 hours in December, and recovers to 8.8 hours by February. Rainfall and windy conditions taper off with rainfall decreasing from 1.61" (41mm) to 0.94" (24mm), and number of rainy days dropping from 17.5 days to 14.2 days in February.

Weather in January

The beginning of the year in Toa Alta, Puerto Rico signals a period of relatively lower temperatures and humidity, offering a slight respite from the typically tropical weather. Cloud cover tends to be moderate, making January a suitable month for outdoor activities, with excellent chances of bright sunlight piercing the sky. Weather in January »

Weather in February

The transition from January to February brings subtle changes to the climatic setting of Toa Alta. The temperatures show an upward trend, providing a touch of warmth to the already pleasant climate. Wind conditions slightly vary, maintaining a consistent breeze that hallmarks the Puerto Rican weather. Weather in February »

Weather in March

In March, the weather in Toa Alta steps closer to true tropical conditions. Temperature and humidity progressively rise, while the brightness of the day amplifies due to increasing daylight hours. The breeze becomes mildly cooler, heralding the imminent onset of the summer months. Weather in March »

Weather in April

April weather mirrors the march towards the peak tropical season in Toa Alta. The arrival of April brings an uptick in temperature, humidity and daylight hours, clearly signifying the end of the relatively cooler months. As the rainfall increases, so does the lush greenery and vibrant flora, painting a picturesque landscape. Weather in April »

Weather in May

May in Toa Alta greets residents with the beginning of the hot season, characterized by a noticeable increase in average temperatures. The surge in humidity levels enhances the tropical feel, making it a perfect time for water-related activities. Weather in May »

Weather in June

The heat continues to rise in June as Toa Alta heads towards the mid-year mark. Stepping into the month, one can sense the pronounced intensification of the tropical ambiance, marked by higher humidity, persistent heat, and radiant sunshine. Weather in June »

Weather in July

July makes its presence felt with the warmest weather conditions of the year in Toa Alta. As the temperatures peak, humidity also maintains an elevated level, strengthening the hot and wet climate that defines tropical regions. With rainfall becoming more frequent, the burst of greenery and diverse fauna come to life. Weather in July »

Weather in August

The weather in August in Toa Alta bears resemblance with the preceding month, maintaining high temperatures and humidity levels. A gradual decrease in daylight hours is perceptible, as the season heads towards the end of summer. Weather in August »

Weather in September

September in Toa Alta signals the onset of the transition period from the hot to the cooler months. The temperature decline is gradual and moderate, bringing slight relief from the summer's peak heat. Changes in wind speed are also noticeable, indicating the upcoming shift in the season. Weather in September »

Weather in October

October breeds noticeable changes in the weather dynamics of Toa Alta. While the temperatures start dipping, frequent rain showers dominate the month, contributing to lower daylight hours. The wind registers a slowdown, heightening the peaceful ambiance amidst the refreshing showers. Weather in October »

Weather in November

November brings a notable difference in temperature levels as Toa Alta moves towards the end of the year. The ambiance becomes more pleasant with cooler winds replacing the hot summer gusts. Rainfall activity decreases, and the cloud cover also reduces, allowing for improved sun visibility. Weather in November »

Weather in December

Toa Alta sees a further drop in temperature as December kicks in, marking the transition towards the cooler months. The weather becomes increasingly pleasant with a noticeable reduction in humidity levels. Rainfall exhibits a significant decline, indicating the approaching dry period, while daylight hours continue to shorten. Weather in December »

Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

In Toa Alta, the average lowest temperatures are observed in January, with a high of 79.9°F (26.6°C) and a low of 73.6°F (23.1°C).

How much does it rain?

In Toa Alta, during the entire year, the rain falls for 223.5 days and collects up to 27.95" (710mm) of precipitation.

When is the lowest UV index?

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

What is the driest month?

February is the month with the least rainfall. Rain falls for 14.2 days and accumulates 0.94" (24mm) of precipitation.

What is the least humid month?

March is the least humid month, with an average relative humidity of 76%.

What is the most humid month?

May through July and November, with an average relative humidity of 79%, are most humid months.

What are the months with the most sunshine?

May and June, with an average of 10.8h of sunshine, are months with the most sunshine.

What is the month with the highest UV index?

May through November, with an average maximum UV index of 7, are months with the highest UV index.

When are the longest days?

With an average of 13h and 12min of daylight, June has the longest days of the year.

What are the warmest months?

Toa Alta's temperatures tend to reach their peak averages in August, with a high of 85.5°F (29.7°C) and a low of 78.4°F (25.8°C).

What is the rainiest month?

The month with the most rainfall is October, when the rain falls for 24 days and typically aggregates up to 3.82" (97mm) of precipitation.

What is the month with the least sunshine in Toa Alta?

With an average of 6.7h of sunshine, November has the least sunshine of the year in Toa Alta.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 11h and 0min of daylight.

Is there Daylight Saving Time (DST)?

Toa Alta does not observe Daylight Saving Time (DST). AST timezone is used over the entire year.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N D

Average temperature
Toa Alta, PR

Average high temperature in January:
79.9°F
Average high temperature in February:
80.2°F
Average high temperature in March:
80.2°F
Average high temperature in April:
81.1°F
Average high temperature in May:
82.6°F
Average high temperature in June:
84.2°F

Average high temperature in July:
84.7°F
Average high temperature in August:
85.5°F
Average high temperature in September:
85.1°F
Average high temperature in October:
84.7°F
Average high temperature in November:
83.1°F
Average high temperature in December:
81°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (79.9°F).

Average low temperature in January:
73.6°F
Average low temperature in February:
73.4°F
Average low temperature in March:
73°F
Average low temperature in April:
74.3°F
Average low temperature in May:
75.7°F
Average low temperature in June:
77.5°F

Average low temperature in July:
78.3°F
Average low temperature in August:
78.4°F
Average low temperature in September:
78.4°F
Average low temperature in October:
78.4°F
Average low temperature in November:
76.6°F
Average low temperature in December:
75.2°F

The months with the highest average low temperature are August, September and October (78.4°F).
The coldest month (with the lowest average low temperature) is March (73°F).

Average pressure
Toa Alta, PR

The months with the highest atmospheric pressure are January and February (30.02"Hg).
The month with the lowest atmospheric pressure is October (29.9"Hg).

Average wind speed
Toa Alta, PR

The windiest month (with the highest average wind speed) is July (10mph).
The calmest month (with the lowest average wind speed) is October (6.8mph).

Average humidity
Toa Alta, PR

The months with the highest relative humidity are May, June, July and November (79%).
The month with the lowest relative humidity is March (76%).

Average rainfall
Toa Alta, PR

The wettest month (with the highest rainfall) is October (3.82").
The driest month (with the least rainfall) is February (0.94").

Average rainfall days
Toa Alta, PR

Average rainfall days in January:
14.2 days
Average rainfall days in February:
14.2 days
Average rainfall days in March:
17 days
Average rainfall days in April:
18.3 days
Average rainfall days in May:
22.7 days
Average rainfall days in June:
15.8 days

Average rainfall days in July:
16.8 days
Average rainfall days in August:
19.7 days
Average rainfall days in September:
20.4 days
Average rainfall days in October:
24 days
Average rainfall days in November:
22.9 days
Average rainfall days in December:
17.5 days

The month with the highest number of rainy days is October (24 days).
The months with the least rainy days are January and February (14.2 days).

Average daylight / Average sunshine
Toa Alta, PR

Average daylight in January:
11h and 1min
Average daylight in February:
11h and 4min
Average daylight in March:
12h and 1min
Average daylight in April:
12h and 4min
Average daylight in May:
13h and 0min
Average daylight in June:
13h and 1min

Average daylight in July:
13h and 1min
Average daylight in August:
12h and 4min
Average daylight in September:
12h and 1min
Average daylight in October:
11h and 4min
Average daylight in November:
11h and 2min
Average daylight in December:
11h and 0min

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 0min).

Average sunshine in January:
8h and 5min
Average sunshine in February:
8h and 5min
Average sunshine in March:
8h and 3min
Average sunshine in April:
8h and 5min
Average sunshine in May:
10h and 5min
Average sunshine in June:
10h and 5min

Average sunshine in July:
10h and 1min
Average sunshine in August:
9h and 1min
Average sunshine in September:
9h and 2min
Average sunshine in October:
8h and 1min
Average sunshine in November:
6h and 4min
Average sunshine in December:
6h and 5min

The months with the most sunshine are May and June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

Average sunshine days
Toa Alta, PR

Average sunshine days in January:
9.8 days
Average sunshine days in February:
8.4 days
Average sunshine days in March:
8.9 days
Average sunshine days in April:
6.6 days
Average sunshine days in May:
5 days
Average sunshine days in June:
9.3 days

Average sunshine days in July:
8.3 days
Average sunshine days in August:
4.9 days
Average sunshine days in September:
5.3 days
Average sunshine days in October:
3.5 days
Average sunshine days in November:
3.5 days
Average sunshine days in December:
7.5 days

The month with the most sunshine days is January (9.8 days).
The months with the least sunshine days are October and November (3.5 days).

Average UV index
Toa Alta, PR

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

Average cloud cover
Toa Alta, PR

The months with the most cloud cover are May, July and November (Cloud cover 34).
The month with the least cloud cover is September (Cloud cover 26).

Average visibility
Toa Alta, 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).

Climate and monthly weather forecastToa Alta, PR

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