San Fernando, Mexico Climate by Month
San Fernando, Tamaulipas, Mexico
Very hot summers and mild winters, with rain spread through the year.
San Fernando has very hot summers and mild winters, with rain spread through the year. August is the warmest month, with highs around 98°F (37°C); January is the coolest at 73°F (23°C), and nights dip to 49°F (9°C). About 26 in (668 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 98°F(37°C)
- Average high, August
- Coldest nights
- 49°F(9°C)
- Average low, January
- Rain per year
- 26 in(668 mm)
- No clear rainy season
- Humidity
- 72%
- Sunniest: July
Best and worst months in San Fernando
Best for weatherThe most comfortable weather comes from December to February, with highs around 75°F (24°C) and about 0.8 in (21 mm) of rain a month.
Least pleasantAugust and September are the least pleasant; September is the hottest, with highs of 93°F (34°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in December.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
San Fernando weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuaryBest | 73°F(23°C) | 49°F(9°C) | 0.9 in(22 mm) | 77% | 3.2 |
| FebFebruaryBest | 78°F(26°C) | 53°F(12°C) | 0.6 in(15 mm) | 75% | 3.9 |
| MarMarch | 83°F(28°C) | 58°F(15°C) | 0.9 in(24 mm) | 70% | 4.5 |
| AprApril | 89°F(31°C) | 65°F(18°C) | 1.4 in(36 mm) | 70% | 5.3 |
| MayMay | 93°F(34°C) | 71°F(22°C) | 1.9 in(49 mm) | 70% | 5.9 |
| JunJune | 96°F(36°C) | 74°F(23°C) | 3.6 in(91 mm) | 68% | 6.1 |
| JulJuly | 97°F(36°C) | 74°F(24°C) | 3.1 in(80 mm) | 67% | 6.3 |
| AugAugust | 98°F(37°C) | 74°F(23°C) | 3.0 in(75 mm) | 66% | 6.0 |
| SepSeptember | 93°F(34°C) | 71°F(22°C) | 5.6 in(141 mm) | 72% | 5.0 |
| OctOctober | 88°F(31°C) | 65°F(18°C) | 2.9 in(74 mm) | 74% | 4.4 |
| NovNovember | 81°F(27°C) | 57°F(14°C) | 1.4 in(36 mm) | 75% | 3.5 |
| DecDecemberBest | 74°F(23°C) | 50°F(10°C) | 1.0 in(25 mm) | 74% | 3.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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