San Antonio, TX weather and climate in 2024
Day
18 °C
Night
5 °C
Sea
0 °C
Precipitation
44 mm
in month
Rainy days
6 days
in month
Daylight
10 hours
average
Sunshine
5 hours
average
Humidity
67 %
Day
18 °C
Night
5 °C
Sea
0 °C
Precipitation
44 mm
in month
Rainy days
6 days
in month
Daylight
10 hours
average
Sunshine
5 hours
average
Humidity
67 %
Overview: San Antonio, TX
Weather charts for San Antonio, TX
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Weather overview for San Antonio, TX
Weather overview
San Antonio, TX, graced with a humid subtropical climate, enjoys mild winters and long, hot summers. Visitors can expect sultry temperatures reaching their zenith in July with an average high of 35 °C (95 °F). Rain is a familiar companion with June registering an average rainfall of 95 mm (3.73 in). Meanwhile, winter's chill lightly touches the city with January hovering around an average low of 5 °C (41 °F). Despite the variables, the city's weather can serve up beautiful, picturesque days ideal for exploring the many wonders San Antonio has to offer.
January weather
January in San Antonio brings a mild start to the year. Temperatures peaking at 18 °C (64 °F) interface with cooler nights averaging 5 °C (41 °F). The rainfall is relatively light with an average of 44 mm (1.74 in), so expect dry days with occasional showers.
February weather
As February arrives, San Antonio experiences a slight uptick in daytime temperatures to 20 °C (67 °F), while nights remain cool at 7 °C (45 °F). The frequency of rain is similar to January with 5 days of rainy days on average.
March weather
March beckons the spring with a considerable climb in daytime temperatures to around 23 °C (74 °F), and nighttime lows average a more comfortable 11 °C (51 °F). Rainfall persists at a moderate level with 49 mm (1.95 in) for the month.
April weather
April's warmth intensifies, presenting average highs around 27 °C (81 °F). With the arrival of spring fully realized, night temperatures settle around 15 °C (58 °F). April showers are not an anomaly with the city experiencing 55 mm (2.15 in) of rainfall.
May weather
May ushers in the Texas heat with daytime temperatures soaring to an average of 31 °C (87 °F). Nights are warm at 19 °C (67 °F), encouraging al fresco evenings. The city feels the onset of heavier rains with 95 mm (3.76 in) expected.
June weather
June in San Antonio signals the start of summertime, with mercury levels reaching an apex of 33 °C (92 °F) during the day and 22 °C (72 °F) at night. As the warmest month, it also brings the most rainfall at 95 mm (3.73 in), signaling frequent but often short-lived summer storms.
July weather
The heat-wave continues into July with scorching daily averages of 35 °C (95 °F). Nights offer little respite, hardly dipping below 23 °C (74 °F). Rainfall eases slightly compared to June, with totals averaging 55 mm (2.17 in).
August weather
As August rolls in, San Antonio's summer holds steady. Daytime highs stay in the blistering 36 °C (96 °F) zone, with nighttime lows hovering around 23 °C (73 °F). A modest dip in precipitation occurs with an estimated 54 mm (2.11 in).
September weather
September sees a subtle change as temperatures begin to moderate, averaging a high of 33 °C (91 °F) and a low of 20 °C (69 °F). The rain, however, hangs on with an average of 78 mm (3.06 in) indicating some wet weather.
October weather
October's arrival heralds a noticeable decline in heat, with daily highs around 28 °C (83 °F) and lows of 16 °C (60 °F). Rainfall frequency lessens slightly with 89 mm (3.48 in) statistically on tap.
November weather
November sees a further cooling trend, with daytime temperatures scaling back to 23 °C (73 °F) and nighttime averages dropping to 10 °C (51 °F). Occasional showers persist with the city accumulating an average of 54 mm (2.12 in).
December weather
December welcomes back winter temperatures with highs of 18 °C (65 °F) and lows at seasonal 6 °C (42 °F). Mild rainfall is also characteristic for the season, amounting to 44 mm (1.74 in).
FAQs
What should I wear during the days in San Antonio in January?
January days in San Antonio are mild, so light layers are advisable. You may need a warmer jacket for the cool evenings when temperatures dip to an average low of 5 °C (41 °F).
How do the temperatures in February differ from January in San Antonio?
February brings in slightly warmer days with highs averaging 20 °C (67 °F), while night temperatures gently increase to 7 °C (45 °F) over January figures.
What's the warmth level during the day in March in San Antonio?
March heralds a warm and pleasant climate with balmy daytime temperatures averaging 23 °C (74 °F), perfect for outdoor activities.
How comfortable are San Antonio's temperatures in April?
April offers a comfortable climb in warmth, with daytime temperatures reaching an enjoyable 27 °C (81 °F), while evenings are mild enough for a light sweater.
Is May a particularly hot month in San Antonio?
Yes, May marks the beginning of really hot days in San Antonio with an average high of 31 °C (87 °F); remember to stay hydrated and wear sun protection.
How hot do temperatures get in San Antonio in June?
June steps up the heat with average highs around 33 °C (92 °F), it's essential to plan activities to avoid the midday sun and seek shade when possible.
What's the peak temperature in San Antonio during July?
July is no stranger to intense heat in San Antonio, clocking in peak daytime temperatures of approximately 35 °C (95 °F) – be sure to take measures against the extreme heat.
Is San Antonio very hot in August?
August in San Antonio remains profoundly hot, with the highest daytime temperatures of the year reaching 36 °C (96 °F); take precautions to stay cool.
What is the average high temperature in San Antonio during September?
The heat begins to relent in September with San Antonio averaging a high of 33 °C (91 °F), signaling the gradual shift towards fall.
Does October in San Antonio offer relief from summer's heat?
October offers a delightful reprieve from the summer's swelter, easing into a comfortable 28 °C (83 °F), ideal for enjoying the fall ambiance.
What is the temperature range I can expect in San Antonio throughout November?
November offers a temperate climate range in San Antonio, from a comfortable 23 °C (73 °F) during the day to a fresher 10 °C (51 °F) at night.
How cold does it generally get in San Antonio in December?
December ushers in cooler weather, though 'cold' is relative, with daily highs averaging 18 °C (65 °F) and chilling to around 6 °C (42 °F) at night.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.