Climate and monthly weather forecast
San Miguel, El Salvador

San Miguel, a vibrant city in El Salvador, falls under the Aw Köppen climate classification, know colloquially as the tropical wet and dry or savanna climate. Positioned in close proximity to the equator, the city experiences a relatively uniform climate throughout the year, marked by high temperatures and significant rainfall. Monthly average high temperatures range from 30°C (86°F) to 34°C (93.2°F), while average low temperatures waver within a smaller range of 16°C (60.8°F) to 20°C (68°F). Precipitation varies more drastically, fluctuating from 2mm (0.08") in the driest months up to a substantial 365mm (14.37").

A closer look at the data reveals illuminating patterns. The early months of the year record lesser rainfall with values oscillating between 2mm (0.08") and 6mm (0.24"), while the period from May to October indicates much greater precipitation, peaking at 365mm (14.37") in September. As the city transitions from dry to wet season, the number of rainy days increase, reaching 28 days in September. From November, the rainfall promptly decreases, closing the year with nominal 5mm (0.2") in December.

Daylight hours fluctuate minimally, from a low of 11.3 hours in December to a high of 12.9 hours in June. While sunshine duration varies slightly, average monthly values hover between 6 to 9 hours. Despite changes in rainfall patterns, the Ultraviolet (UV) index remains consistently high, reaching a maximum of 12 from March to August, indicating the need for effective sun protection throughout the year.

Optimal times to explore San Miguel are generally during the drier months, from November to March, when rainfall is least. Travelers can expect to experience average high temperatures between 30°C (86°F) to 32°C (89.6°F) and average low temperatures from 16°C (60.8°F) to 20°C (68°F). Even in these months, UV indices remain high, underscoring the necessity for protective garments and sunblock.

The period between May and October is characterized by considerably heavy rains, resulting in more challenging travel conditions. Interestingly, despite recording the highest sunshine hours in June at 12.9 hours, the months of May, June, July and August also correspond with considerable precipitation, reaching up to 305mm (12.01") in June. Simultaneously, the UV index hits its maximum level of 12, ensuring visitors take adequate precautions to guard against sun damage.

In the Spring months from March to May, San Miguel sees a marked shift in weather as rainfall levels rise from 6mm (0.24") in March to a noticeable 192mm (7.56") in May. Although the transition is significant, average temperatures relatively remain high, with minor variations between the highs of 32°C (89.6°F) to 34°C (93.2°F) and lows of 19°C (66.2°F) to 20°C (68°F). As the sun shines around 9 hours per day during these months, the UV index reaches its peak of 12, demanding high sun protection.

Summer in San Miguel, from June to August, coincides with the peak rainy season. Rainfall peaks in August at 262mm (10.31"). The average high temperature varies slightly from 34°C (93.2°F) in June to 31°C (87.8°F) in August, while an average low of 20°C (68°F) is maintained throughout these months. Despite being the wettest period, Summer provides the longest daylight hours with 12.9 hours in June dipping slightly to 12.6 hours in August.

Autumn, spanning from September to November, continues the trend of high rainfall with September receiving the highest rainfall of the year at 365mm (14.37"). Commensurately, the number of rainy days tops at 28 in September. A gradual decline in rainfall is experienced as Autumn advances, reaching 46mm (1.81") in November. High temperatures drift from 30°C (86°F) to 31°C (87.8°F) whereas low temperatures shift from 19°C (66.2°F) to 18°C (64.4°F) across Autumn.

Winter months from December to February entail a stark reduction in rainfall in San Miguel. Rainfall levels plummet from 46mm (1.81") in November to a mere 5mm (0.2") in December. A slight upward trend is observed in January and February, but values remain below 3mm (0.12"). Over these months, the average high temperature fluctuates from 32°C (89.6°F) to 31°C (87.8°F) and the low temperature ranges from 16°C (60.8°F) to 17°C (62.6°F). Considering these conditions, Winter marks a relatively dry and warm period in San Miguel.

San Miguel begins the new year under a bright sun, with light showers to keep the climate in check. Occasional rainfall of 2mm (0.08") moderates the heat and keeps January lively. The sunny days bring pleasantly warm weather that encourages outdoor activities. Weather in January »

As the footsteps of January fade, February enters embracing marginally warmer weather. While higher temperatures become the norm, the month also experiences a small increase in rainfall to 3mm (0.12"). The continuity of the sun's presence ensures daylight's dominance. Weather in February »

The tropical city San Miguel immerses itself in March's climatic nuances, marked by increased rainfall but consistent daylight hours. The rain showers surge to 6mm (0.24"), bringing a refreshed aura to the city. The reasonably uniform temperatures make it a comfortable period for city exploration and recreation. Weather in March »

April sees a steep rise in San Miguel's rainfall, dramatically jumping to 39mm (1.54"). This increased precipitation signals the onset of the wet season, yet despite the increased rainfall, the temperature range remains steady. The adequate share of daylight ensures that the city never falls under utter gloom. Weather in April »

Substantial rainfall continues in May, yet San Miguel keeps a lively charm amidst these showers. The city receives the highest daylight of the year, even as the rainfall peaks to a significant 192mm (7.56"). The increased precipitation doesn't hamper the temperature though, keeping the city's warmth intact. Weather in May »

June ascends the throne with the highest rainfall of the year in San Miguel, reaching an impressive 305mm (12.01"). The wet season is in its most dominant phase, asserting its authority over the city's weather. However, the city's tropical warmth endures, ensuring the atmosphere never turns chilly. Weather in June »

July manifests a slight decrease in rainfall, yet the wet season continues its reign in San Miguel. The city notes a decrease in rainfall to 242mm (9.53"), marking the end of the rainfall peaking phase. The rain showers create a monsoon-like ambiance, enhancing the city's scenic beauty. Weather in July »

In August, the wet season continues in San Miguel with slightly more rain recorded at 262mm (10.31"). The rain showers and warm weather continue to charm locals and visitors alike. Even with the significant rain, the warmth remains unaffected, upholding the city's tropical climate. Weather in August »

September records the highest number of rainy days, with showers frequenting 28 days in San Miguel. Rain dominates the cityscape, with the total rainfall registering a notable 365mm (14.37"). The weather in this part of the year is characterized by short, intense bursts of rainfall. Weather in September »

October marks the beginning of a significant decrease in San Miguel's rainfall. Rainfall totals continue to fall, reaching 236mm (9.29"). The weather balances the dwindling rainfalls with a steady roll of warm temperatures. Visitors can anticipate improved weather conditions towards October end as San Miguel transitions from the wet to the dry season. San Miguel witnesses its lowest temperatures during September and October, when the average high-temperature reaches 30°C (86°F). In San Miguel, in October, it is raining for 23 days, with typically 236mm (9.29") of accumulated precipitation. Weather in October »

November brings significant changes in San Miguel's weather. The month records a sharp fall in rainfall to 46mm (1.81"), indicating the incoming arrival of the dry season. The city starts drying up, saying goodbye to the frequent rains that characterized the past months. Weather in November »

December in San Miguel signifies the final transition to the dry season. Rainfall becomes a rare sight with a meager 5mm (0.2") noted throughout the city. The sun regains prominence as the city basks under its bright rays after prolonged rainy days. Weather in December »