Climate and monthly weather forecast
Concepción de Ataco, El Salvador

The geographical position of Concepción de Ataco, El Salvador, confers on the area a predominately tropical wet and dry climate. This climatological classification is officially recognized as Aw under the Köppen climate system. Presenting a significant variability of environmental variables throughout the year, the area experiences unique weather patterns.

Temperature amplitude is rather consistent in Concepción de Ataco. The mercury oscillates between 18.9°C (66°F) in December and a peak of 23.3°C (73.9°F) in March. Lower temperatures are observed starting from 10.8°C (51.4°F) in January to 14.6°C (58.3°F) in May. Daylight hours, crucial for heat accumulation, show moderate variations. The shortest day is observed in December with 11.3 hours, while the longest day registers 12.9 hours between June and July.

Rainfall patterns reveal the most significant variability. Precipitation extends from the mere 2mm (0.08") in February to a substantial 348mm (13.7") in September. The maximum rainfall is recorded from May to September, a period classified as the rainy season. This intense rainfall period serves to emphasize the uniqueness of Concepción de Ataco's climate.

Considering each climatic factor, the most favorable time to visit Concepción de Ataco extends from November to April. During this period, the weather and climatic conditions allow for the optimal enjoyment of outdoor activities.
Despite the slightly cooler temperatures during this period, ranging between 18.9°C (66°F) to 23.3°C (73.9°F), the relatively reduced rainfall makes up for it. February is particularly favorable, as the average rainfall is only 2mm (0.08").

The most challenging period to engage in outdoor activities or sight-seeing in Concepción de Ataco would probably be from May to September. This period is typically marked by heavy rainfall, with the monthly average precipitation reaching 348mm (13.7") in September. Additionally, the high temperatures ranging from 21.6°C (70.9°F) to 22.7°C (72.9°F) in these months augment humidity levels significantly, making the weather uncomfortable.

Typically, spring in Concepción de Ataco brings a certain level of variability in weather conditions. This period witnesses an incremental increase in temperature, from averages of 20.6°C (69.1°F) in February to 23.3°C (73.9°F) in March, and finally to 23.2°C (73.8°F) in April. Correspondingly, low-temperature changes are noticed, as it rises from 11.6°C (52.9°F) in February, to 12.8°C (55°F) in March, and finally settling at 13.9°C (57°F) in April. Interestingly, the precipitation level sees a significant surge, from 2mm (0.08") in February, to a substantial 36mm (1.42") in April.

Summer in Concepción de Ataco is characteristically hot and rainy. From May to July, average high temperatures consistently clock around 22.7°C (72.9°F) to 21.6°C (70.9°F). Corresponding low temperatures range between 14.6°C (58.3°F) and 14°C (57.2°F). Rainfall levels typically leap during this period, with an average of 152mm (5.98") in May, reaching 292mm (11.5") in June, and peaking at 316mm (12.44") in July.

In autumn, temperatures average around 21.6°C (70.9°F) from August to October, with low temperatures hovering at 14°C (57.2°F) in August and October and peaking slightly at 14.2°C (57.6°F) in September. Rainfall, however, remains considerably high, with an average rainfall of 311mm (12.24") in August, peaking at 348mm (13.7") in September, before dropping to 217mm (8.54") in October.

Winter months in Concepción de Ataco are typically cooler and markedly drier, with rainfall levels diminishing. From November to January, average high temperatures range from 19.2°C (66.6°F) to 20°C (68°F), dropping to their yearly minimum of 18.9°C (66°F) in December. The corresponding low temperatures fluctuate between 14°C (57.2°F) in November to 11.7°C (53.1°F) in December, finally reaching 10.9°C (51.6°F) in January. This period is characterized by significantly less rainfall, with an average of 36mm (1.42") in November, dropping to 10mm (0.39") in December, and remaining at this low level into January.

Starting the year, the weather in Concepción de Ataco, El Salvador is relatively warm. The daytime highs hover around 19.3°C (66.7°F), providing a pleasant climate. The transition from day to evening is noticeable, with chillier nights dropping down to 10.8°C (51.4°F). Weather in January »

The shift from January to February brings very subtle meteorological changes. Temperatures vary marginally, with the climate maintaining its comfortably warm touch. Rainfall totals remain at low levels, consecutively making February another exceptionally dry month. Weather in February »

Come March, the weather begins to take a warmer shift. A slight boost in temperature is noticeable between February and March paving the way towards the advent of summer. Rainfall remains sparse yet shows a tiny increase from the preceding months. Weather in March »

Moving into April, changes in Concepción de Ataco's weather become increasingly apparent. A significant change occurs in rainfall amounts from a meager 9mm (0.35") in March to a discernible 36mm (1.42") in April. While this indicates the onset of the rainy season, temperatures, between 13.9°C (57°F) during nights and 23.2°C (73.8°F) at peak day time, keep the days pleasantly warm. Weather in April »

May sees palpable changes in the weather conditions. The transition is from warm to distinctly warmer days, reflected in the increase in temperature. A spike in rainfall marks the high point of the rainy season's progress; residents brace themselves for the wettest month. Weather in May »

The weather in June sees an overlap of lingering heat and significant rainfall. From the high temperatures of May, a marginal dip may be felt during daytime whilst nights maintain a constant temperature. Rainfall shows a relative increase, adding to the accumulated totals of the rapidly progressing rainy season. Weather in June »

With the progression of the year, July delivers a consistent rainy spell in Concepción de Ataco. Weather formations maintain temperatures of 21.6°C (70.9°F) during the day and a mild 14°C (57.2°F) at night. A high amount of rainfall, 316mm (12.44"), transforms the surroundings into a monsoon paradise. Weather in July »

August maintains the conditions of a typical rainy season commenced in the earlier months. Despite the dominant monsoon, temperatures remain fairly consistent from July to August. Humidity may be more evident owing to ongoing precipitation. Weather in August »

September carries forward the prominent monsoon pattern with high rainfall. There is a slight decrease in daytime highs, indicating the start of the departure of the summer heat. Evenings also become slightly cooler compared to previous months. Weather in September »

As October unfolds, variation in weather conditions is perceptible. A notable decrease in rainfall amounts from 348mm (13.7") in September to 217mm (8.54") in October signals the alleviating monsoon. Cooler temperatures begin to prevail, accompanied by shorter daylight hours. Weather in October »

November demonstrates conspicuous weather diversions in Concepción de Ataco. A major drop in rainfall is observed, resulting in significantly drier weather conditions. The temperatures follow the previous month’s trend rendering the days and nights comfortably cooler. Weather in November »

Welcoming winter, the weather in December in Concepción de Ataco experiences the year's coldest month. Temperatures ranging from 18.9°C (66°F) in the day to 10.9°C (51.6°F) at night paint a cooler atmosphere. Rainfall continues its decreasing trend, with a mere 10mm (0.39") adding up to effectively end the rainy season. Weather in December »