Climate and monthly weather forecastLa Union, El Salvador
Climate and monthly weather forecast
The climate of La Union
La Union, positioned in El Salvador, sits under the influence of a Tropical wet and dry climate, also recognized as the Köppen climate classification Aw. This category signals a dominant climate with distinct wet and dry periods.Throughout the year, temperature fluctuations are somewhat minimal in this tropical region. Peak temperatures are minimal from 30.6°C (87.1°F) in October to the highest 34.4°C (93.9°F) observed in April. Night time offers little relief, with the lowest temperature dipping to 21.8°C (71.2°F) in December and January. This clearly marks the absence of a traditional cool season in La Union.
Precipitation patterns in La Union are more pronounced, correlating to a distinct wet and dry season. Months from May to October garner the most rainfall, peaking at 192mm (7.56") in October. In contrast, the dry season runs from January through to April, during which the maximum rainfall recorded is just 4mm (0.16") in March.
Relative humidity hovers between 56% in March and the dense 80% registered in October. The moisture-laden air heavily influences the overall comfort levels. Sea temperatures remain more uniform, varying only between a comfortable 27.6°C (81.7°F) in February to the warmest 29.9°C (85.8°F) in June and August. However, sunshine hours do fluctuate during the year, revealing a more typical pattern. Days are longest from May to July, with up to 12.8 to 12.9 daylight hours, while the shortest days are from November to January, offering a minimum of 11.4 daylight hours.
The best time to visit La Union
Tourists favoring warm and dry conditions will find the period from January to April apt for a visit to La Union, as it experiences the least rainfall and moderate temperatures during this time. Sea temperatures nestle at a refreshing 28°C (82.4°F), granting visitors the perfect conditions for a diverse range of water activities. These months also enjoy extended periods of sunshine - in March, residents and visitors relish in a robust 10.9 hours of sunshine per day.The worst time to visit La Union
In contrast, the months from May to October bring about challenging weather conditions for visitors. Torrential rainfall, peaking to 192mm (7.56") in October, is accompanied by the highest relative humidity of 80%. These conditions contribute to higher discomfort levels, making it the least attractive time to visit La Union. Despite this, sea temperatures remain warm, hovering around 29.9°C (85.8°F).Spring weather in La Union
March through May in La Union brings blooming flora under the warm climate, signifying the arrival of the spring season in the tropics. Temperatures range from a high of 34.3°C (93.7°F) in March to a comfortable low of 23.6°C (74.5°F) in the same month. However, May marks a transition to the wet season with rainfall levels increasing to 177mm (6.97").Summer weather in La Union
The months of June through August represent summer in La Union. This period is characterized by heavy rainfall with the precipitation levels reaching up to 158mm (6.22") in June. Despite high rainfall, temperatures hover at a warm 31.8°C (89.2°F) to 32.8°C (91°F). The sea remains warm as well, peaking at 29.9°C (85.8°F) in June and August, maintaining this high until the end of September.Autumn weather in La Union
In the tropical climate of La Union, autumn, stretching from September to November, is marked by a gradual decrease in rainfall and temperature. The highest amount of rainfall is seen at 192mm (7.56") in October and the temperatures fluctuate between 31.8°C (89.2°F) in September to 30.6°C (87.1°F) in October.Winter weather in La Union
Winter descends on La Union from December through February. This period sees the end of copious rainfall and the influx of drier conditions. Rainfall decreases dramatically to 1mm (0.04") in December and 2mm (0.08") in February, accompanied by relatively low temperatures fluctuating between 21.8°C (71.2°F) and 22.6°C (72.7°F). This season offers the perfect respite from the otherwise warm and humid conditions prevalent in La Union.Weather in January
The weather in January in La Union, El Salvador, enjoys the freshness of the new year with an average high temperature of 32.5°C (90.5°F). January's climate offers a pleasant relief from the previous month, December, which experiences similar temperatures. Weather in January »Weather in February
January's tranquility extends into February with slight shifts in weather patterns. Despite the continued predominance of warmth, there is a noticeable rise in the average low temperature from 21.8°C (71.2°F) in January to 22.6°C (72.7°F) in February. Weather in February »Weather in March
Continuing the trend, March in La Union offers exciting outdoor weather, differing slightly from February. Gradually, the summer warmth begins to grace the city with higher low temperatures compared to the previous month. Periods of rainfall begin to occur, but clear skies and sunny days still rule over the city's beautiful landscapes. Weather in March »Weather in April
April brings its own charms to La Union with substantial rainfall of 27mm (1.06"). This marks a drastic increase from March's 4mm (0.16"). The city's beauty is unrivaled under April's skies, the environment is blossoming, and the holiday atmosphere is in full swing. Weather in April »Weather in May
May acts as the bridge between the warmer and wetter seasons in La Union. The most remarkable characteristic is the sharp spike in monthly rainfall, reaching up to 177mm (6.97") from April's total of 27mm (1.06"). And yet, the city's charm remains undiminished, if not enhanced, by the transformation brought by rain. Weather in May »Weather in June
June in La Union conveys a consistent continuation from May's weather. The month carries a slight dip in high temperatures, adding variety to the weather dynamics. Rainfall remains significant in the city, fostering lush greenery and maintaining abundant sea life. Weather in June »Weather in July
July is a month of relaxation for the city of La Union, offering a mild respite from June's strong rainfall. The overall climatic conditions stay relatively close to June, with a small decrease in rainfall to 90mm (3.54"). Sunshine hours increase slightly, boosting spirits, and encouraging more public activities. Weather in July »Weather in August
August in La Union witnesses an upsurge in rainfall, restoring the wetter weather experienced in June. However, it doesn't take a substantial toll on other weather components, which continue to show consistency with the past months. Weather in August »Weather in September
The city of La Union in September carries on with August's weather traits. Meanwhile, rainfall increases to 148mm (5.83"), peaking the year's wettest period. Albeit the increase in rainfall, the ethereal beauty of the city does not fade. Weather in September »Weather in October
October in La Union marks the transition from wet to dry weather, with rainfall reaching its yearly peak at 192mm (7.56"). Despite this, the weather feels tranquil, a testament to the city's resilience. Sea and air temperatures maintain their soothing pattern, allowing residents to adjust to the changing climate. Weather in October »Weather in November
The advent of November in La Union signals a decrease in rain, down to 37mm (1.46") from October's 192mm (7.56"). This considerable reduction creates a delightful breathing space before winter approaches. Pleasant temperatures maintained from the previous month make life in La Union comfortable and enjoyable. Weather in November »Weather in December
December puts on a splendid display of La Union's climatic versatility with distinct weather patterns. The largest shift experienced in December is the drastic drop of rainfall to only 3mm (0.12") from November's 37mm (1.46"). Weather in December »Updated: Jan 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The month with the least rainfall in La Union, El Salvador, is January, when the rain falls for 1.8 days and typically collects 1mm (0.04") of precipitation.
In La Union, El Salvador, during the entire year, the rain falls for 201.6 days and collects up to 974mm (38.35") of precipitation.
The months with the least sunshine in La Union are January and February, with an average of 7.7h of sunshine.
January through December, with an average maximum UV index of 7, are months with the highest UV index in La Union.
The months with the lowest UV index in La Union, El Salvador, are January through December, with an average maximum UV index of 7.
With an average sea temperature of 27.6°C (81.7°F), February is the month with the coldest seawater.
The least humid month in La Union, El Salvador, is March, with an average relative humidity of 56%.
La Union's temperatures tend to reach their peak averages in April, with a high of 34.4°C (93.9°F) and a low of 25.8°C (78.4°F).
April has the most sunshine of the year in La Union, El Salvador, with an average of 11.7h of sunshine.
The months with the warmest seawater in La Union, El Salvador, are June and August, with an average sea temperature of 29.9°C (85.8°F).
With an average of 12h and 54min of daylight, June has the longest days of the year in La Union, El Salvador.
La Union's temperature records reveal October as the coldest month, marked by average highs of 30.6°C (87.1°F) and lows of 23°C (73.4°F).
October is the most humid month, with an average relative humidity of 80%.
The month with the most rainfall is October, when the rain falls for 27.4 days and typically aggregates up to 192mm (7.56") of precipitation.
The month with the shortest days is December, with an average of 11h and 24min of daylight.
La Union, El Salvador, does not observe Daylight Saving Time (DST). CST timezone is used over the entire year.
Average temperature
La Union, El Salvador
The warmest month (with the highest average high temperature) is April (34.4°C).
The month with the lowest average high temperature is October (30.6°C).
The month with the highest average low temperature is April (25.8°C).
The coldest months (with the lowest average low temperature) are January and December (21.8°C).
Average pressure
La Union, El Salvador
- Average pressure in January:
1013.3mbar - Average pressure in February:
1012.8mbar - Average pressure in March:
1012.5mbar - Average pressure in April:
1011.5mbar - Average pressure in May:
1011.3mbar - Average pressure in June:
1011.6mbar
- Average pressure in July:
1012.2mbar - Average pressure in August:
1011.8mbar - Average pressure in September:
1011.5mbar - Average pressure in October:
1011.2mbar - Average pressure in November:
1012mbar - Average pressure in December:
1012.7mbar
The month with the highest atmospheric pressure is January (1013.3mbar).
The month with the lowest atmospheric pressure is October (1011.2mbar).
Average wind speed
La Union, El Salvador
- Average wind speed in January:
9.8km/h - Average wind speed in February:
9.3km/h - Average wind speed in March:
8.4km/h - Average wind speed in April:
7km/h - Average wind speed in May:
6.1km/h - Average wind speed in June:
5.9km/h
- Average wind speed in July:
7.2km/h - Average wind speed in August:
6km/h - Average wind speed in September:
5.6km/h - Average wind speed in October:
5.8km/h - Average wind speed in November:
7.2km/h - Average wind speed in December:
8.9km/h
The windiest month (with the highest average wind speed) is January (9.8km/h).
The calmest month (with the lowest average wind speed) is September (5.6km/h).
Average humidity
La Union, El Salvador
The month with the highest relative humidity is October (80%).
The month with the lowest relative humidity is March (56%).
Average rainfall
La Union, El Salvador
The wettest month (with the highest rainfall) is October (192mm).
The driest month (with the least rainfall) is January (1mm).
Average rainfall days
La Union, El Salvador
- Average rainfall days in January:
1.8 days - Average rainfall days in February:
2.5 days - Average rainfall days in March:
5.4 days - Average rainfall days in April:
16.1 days - Average rainfall days in May:
26.7 days - Average rainfall days in June:
26.9 days
- Average rainfall days in July:
22.2 days - Average rainfall days in August:
25.7 days - Average rainfall days in September:
28.3 days - Average rainfall days in October:
27.4 days - Average rainfall days in November:
14.7 days - Average rainfall days in December:
3.9 days
The month with the highest number of rainy days is September (28.3 days).
The month with the least rainy days is January (1.8 days).
Average sea temperature
La Union, El Salvador
The best months for swimming (with the highest average sea temperature) are June and August (29.9°C).
The coldest month (with the lowest average sea temperature) is February (27.6°C).
Average daylight / Average sunshine
La Union, El Salvador
- Average daylight in January:
11h and 24min - Average daylight in February:
11h and 42min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 24min - Average daylight in May:
12h and 42min - Average daylight in June:
12h and 54min
- Average daylight in July:
12h and 48min - Average daylight in August:
12h and 36min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 48min - Average daylight in November:
11h and 30min - Average daylight in December:
11h and 24min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in January:
7h and 42min - Average sunshine in February:
7h and 42min - Average sunshine in March:
10h and 54min - Average sunshine in April:
11h and 42min - Average sunshine in May:
10h and 54min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
11h and 18min - Average sunshine in September:
9h and 18min - Average sunshine in October:
8h and 42min - Average sunshine in November:
9h and 54min - Average sunshine in December:
7h and 48min
The month with the most sunshine is April (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 7h and 42min).
Average sunshine days
La Union, El Salvador
- Average sunshine days in January:
28.6 days - Average sunshine days in February:
24 days - Average sunshine days in March:
24 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
3.3 days - Average sunshine days in June:
2.5 days
- Average sunshine days in July:
7.1 days - Average sunshine days in August:
3.8 days - Average sunshine days in September:
0.6 days - Average sunshine days in October:
2.8 days - Average sunshine days in November:
13.6 days - Average sunshine days in December:
25.9 days
The month with the most sunshine days is January (28.6 days).
The month with the least sunshine days is September (0.6 days).
Average UV index
La Union, El Salvador
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover
La Union, El Salvador
The month with the most cloud cover is October (Cloud cover 37).
The month with the least cloud cover is January (Cloud cover 12).
Average visibility
La Union, El Salvador
The months with the highest visibility are January, February, March, April, May, June, July, November and December (10km).
The months with the lowest visibility are August, September and October (9km).
