The climate of Semnan
Geographically nestled in
Iran,
Semnan's climate is chiefly dictated by the Köppen climate classification Csa, denoting a hot mediterranean climate. An observant analysis of pertinent data dissects a wondrous dichotomy of climatic shifts from the extremes of chilly winters to sweltering summers.
Temperature peaks from 8.4°C (47.1°F) in
January to an intense 37.8°C (100°F) around
July and oscillates back downto 10.8°C (51.4°F) by
December. Conversely, the thermometer's lower bracket shifts from -1°C (30.2°F) in January, gradually ascends to 24.9°C (76.8°F) in July, and descends to a hardened 1.2°C (34.2°F) in December.
A keen note must be made about rainfall and humidity changes. Rainfall vacillates from a modest 22mm (0.87") in January, declines to 2mm (0.08") in July and then swells to 20mm (0.79") in December. Days with rain are most common in
March, with about 7, and are the least in
September with fewer than 1. The relative humidity also fluctuates throughout the year, from a diluted 28% in the peak summer months, ballooning up to 63% in the more temperate January.
Winter months occasionally see a modest snowfall, with January usually experiencing around three days of snowfall - contrary to the rest of the months that stay free from snow. Sunshine hours experience a steady climb from 5.5 hours in January to 11.3 hours in
June before receding back to 5.7 hours by December.
The best time to visit Semnan
Given the climate intricacies, it becomes paramount to consider the optimal period for exploring
Semnan. An ideal time is from
April to
June. During this time, daily high temperatures range from 23.9°C (75°F) to 35.4°C (95.7°F). These temperatures paired with an average relative humidity of 34%, make for a warm and comfortable experience, perfect for outdoor exploration. Additionally, the amalgamation of these conditions with a scarce rainfall of 14mm (0.55") to 3mm (0.12") and a lengthy daylight duration of 13.1 to 14.5 hours, complement sightseeing endeavors.
The worst time to visit Semnan
Travelling during the hot summer months of
July and
August might pose a challenge. Though rainfall is nearly absent, with less than 3mm (0.12") to 2mm (0.08") of precipitation, the scorching high temperatures ranging from 37.8°C (100°F) to 36.7°C (98.1°F) and low relative humidity of 28% can lead to uncomfortable, arid conditions.
Spring weather in Semnan
Spring in
Semnan, from
March to
May, sees temperatures surge from 16.8°C (62.2°F) to 29.6°C (85.3°F), coupled with a welcoming decline in relative humidity from 48% to 35%. Rainfall experiences a fluctuation during this period, from 23mm (0.91") subsequently dwindling to 15mm (0.59") towards the end of the season. It is also the season with the most substantial leap in daylight hours, escalating from 12 to 14 hours.
Summer weather in Semnan
The summers, stretching from
June to
August, deliver extreme heat with high temperature readings from 35.4°C (95.7°F) up to 37.8°C (100°F). These temperatures are mitigated by a lower relative humidity level that dips to 28%. Rainfall dwindles to an almost negligible average of 2mm (0.08") to 3mm (0.12"). The daylight hours are at their peak during these months, averaging around 14.5 hours in June and slightly decreasing to approximately 13.5 hours by August.
Autumn weather in Semnan
Autumn, spanning from
September to
November, sees a substantial cooling off from the summer heat with temperatures sliding from 32.7°C (90.9°F) to 17.7°C (63.9°F). Humidity levels gradually increase from 30% to 48%. Despite the rise in humidity, rainfall remains comparably low, from 1mm (0.04") in September to 9mm (0.35") in November. The daylight hours also see a decrease during these months, winding down from 12.4 to 10.3 hours.
Winter weather in Semnan
Winters are relatively cold with high temperatures dropping from 10.8°C (51.4°F) in
December to 8.4°C (47.1°F) in
January and low temperatures from 1.2°C (34.2°F) dipping to -1°C (30.2°F) in January. Relative humidity during this period leans towards the higher side, peaking at 63% in January. Rainfall sees a spurt to 22mm (0.87") in December and slightly decreasing to 20mm (0.79") in
February. Sunshine hours during winter months plunge to 5.7 to 5.5 hours during December and January respectively. January also witnesses about three days of snowfall, adding a brisk touch to the
Semnan winter landscape.
Weather in January
Commencing the year, the weather in
Semnan,
Iran, is relatively chilly, with the mercury dipping under freezing at its lowest point.
January is mixed with rainy and snowy days, both acting as precursors to the severe winter month that lies ahead.
Weather in January »Weather in February
As
Semnan moves from
January into
February, a noticeable reduction in snowfall days becomes apparent, indicating the gradual shift towards spring. The month experiences a decline in relative humidity compared to its predecessor, giving rise to relatively dry air.
Weather in February »Weather in March
The transformation of weather in
March in
Semnan,
Iran is an evident indication of spring. Compared to
February, there's an appreciable increase in both the maximum and minimum temperatures. With a minimum temperature climbing to 5.5°C (41.9°F) and the maximum reaching a pleasant 16.8°C (62.2°F), the effects of the warming season become apparent.
Weather in March »
Weather in April
April demonstrates a significant rise in temperatures in
Semnan,
Iran, as the city progresses deeper into spring. The advent of moderate weather fosters an increased daytime length, inviting more sunshine hours. Despite receiving slightly less rainfall than
March, it remains sufficiently wet due to scattered showers.
Weather in April » Weather in May
May marks the transition from spring to summer in
Semnan,
Iran, manifesting in remarkably hot, dry days. With an increased number of sunshine hours, the city basks in extended daylight. The month is relatively dry, and the rainfall is less frequent compared to the previous month.
Weather in May » Weather in June
June ushers in the full power of summer in
Semnan,
Iran. As the city transitions from
May to June, it experiences an observable escalation in heat. This month sees the least rainfall amongst its peers, endorsing most of the month with sun-soaked days.
Weather in June »
Weather in July
In
Semnan,
Iran,
July stands as the hottest month. The mercury only continues its upward climb from
June, making the weather unbearably hot. The humidity stays low, which prevents the weather from becoming stiflingly oppressive. With the dearth of rain, the number of rainfall days dwindles, paving the way for clear skies.
Weather in July »Weather in August
As summer continues in
Semnan,
Iran,
August maintains much of
July's torrid climate. Despite a negligible reduction in temperatures, Semnan remains deep within the summer season. Rain showers are infrequent, translating to more sunshine hours.
Weather in August »Weather in September
With summer drawing to a close,
September brings a palpable cooler change to
Semnan,
Iran. Rainfall begins to reappear slowly, albeit insignificantly, and the humidity picks up slightly. The length of daylight hours descends further, signifying the approaching autumn.
Weather in September »
Weather in October
October ushers in the season of fall in
Semnan,
Iran. The weather starts to cool down significantly from
September, allowing residents to experience the pleasant change. The city gets less sunshine and more rainfall, albeit not in substantial quantities.
Weather in October » Weather in November
November accentuates the transition to winter in
Semnan,
Iran, with temperatures dropping significantly from
October. The city witnesses extended periods of lower sunshine hours as daylight become scarcer. Meanwhile, the humidity continues to rise, leading to a moisture-laden atmosphere compared to the past few months.
Weather in November » Weather in December
In
December,
Semnan,
Iran, fully plunges into winter. With the shortest daylight hours and decreased sunshine, its residents experience more cloud cover. An increase in rainfall brings a sharp close to the dry season. The chill is intensified, with temperatures dropping drastically from
November, and the reappearance of snowfall days signifies the city's return to winter.
Weather in December » [Resources]