Climate and monthly weather forecast
Arak, Iran

Arak, located in Iran, bears the Köppen climate classification 'Csa.' This categorisation corresponds to a Mediterranean climate with hot summers. Throughout the year, the climate of the region changes remarkably. Commencing in a frosty winter with temperatures hovering near freezing, the climate gradually warms up, culminating in the hot summer months.

Annual average high temperatures range from a chilly 4.2°C (39.6°F) in January and escalate to a searing 35.8°C (96.4°F) in July, while the corresponding average low temperatures move from -5.7°C (21.7°F) in January to 18.8°C (65.8°F) in July. As expected in a city with a Mediterranean climate, seasons are well-defined. The diurnal variance, the difference between daily high and low temperatures, is substantially pronounced during the warmer months , and slightly decreases in winter.

Rainfall is another important factor for Arak's climate. The yearly cycle follows a pattern where the quantified rainfall is high during the colder months, descends to a trickle during the hot months, and then picks back up as the weather cools. Maximum precipitation is recorded at 55mm (2.17") in January, whereas the rain virtually disappears with recorded levels of 1mm (0.04") in July and August. Months which have the most rainy days include January, March and December, with between 10.8 and 11.4 rainy days.

Remarkably, during the summer season, the region becomes a virtual sunshine haven with between 10.9 hours to 11.7 hours of sun per day from June to August.

Given the climatic conditions described above, the most opportune time for tourists to visit Arak is during the spring months, March to May, and the autumn months, September to November. In these periods, the weather is comparatively mild and comfortable with temperatures ranging from 13.5°C (56.3°F) to 30.8°C (87.4°F) for highs and between 2°C (35.6°F) and 13°C (55.4°F) for lows. Furthermore, rainfall is moderate, making it a favorable time for tourism-related outdoor activities.

Oppositely, the worst time to visit Arak is likely during the winter and summer seasons. Winter months can see heavy snowfall with nearly 8 snowfall days in January and temperatures dipping below freezing regularly. Summertime, on the other hand, can be excessively hot with temperatures soaring to 35.8°C (96.4°F) in July and virtually no rainfall to provide relief from the heat.

Spring in Arak brings about a transformation from the winter's cold into milder temperatures. From March to May, highs average from 13.5°C (56.3°F) to 25.6°C (78.1°F), and lows from 2°C (35.6°F) to 11°C (51.8°F). Rainfall begins to reduce, moving from 53mm (2.09") in March to 32mm (1.26") in May, spread over 11.4 to 7.1 days correspondingly. Sunshine duration also begins to increase, moving from 6.3 hours per day in March to 9.3 hours per day in May.

Summer in Arak, lasting from June to August, is characterised by hot temperatures and minimal precipitation. High temperatures stretch from 30.8°C (87.4°F) in June, peaking to 35.8°C (96.4°F) in July, and settle at 34.9°C (94.8°F) in August. Corresponding low temperatures range from 15.3°C (59.5°F) to 18.8°C (65.8°F). Rainfall becomes almost non-existent in these months, reaching an absolute minimum of 1mm (0.04") in July and August.

The autumn season from September to November sees a return to moderate temperatures with high temperatures ranging between 30.8°C (87.4°F) and 14.8°C (58.6°F) and low temperatures ranging from 13°C (55.4°F) to 2.6°C (36.7°F). Rainfall increases gradually over these months with September witnessing minimum rainfall of 1mm (0.04") and November recording 32mm (1.26").

Arak's winters, extending from December to February, are cold with high temperatures dipping to 4.2°C (39.6°F) in January and low ones descending to -5.7°C (21.7°F) in the same month. Rainfall increases to its highest levels in this season with January recording the maximum rainfall of 55mm (2.17"). Snowfall is commonly observed, reaching a maximum of 7.6 days in January.

The year starts with January, showcasing Arak, Iran at one of its coldest points. Notably, the city experiences temperatures plummeting as low as -5.7°C (21.7°F). Showers contribute to the chill as Arak encounters nearly eleven days of rainfall, adding to the bleak winter scene. Weather in January »

Transitioning from January, there is a slight climb in temperatures observed in February. Mercury levels rise to a slightly less frigid -3.8°C (25.2°F), suggesting the coming of Spring. Despite fewer snowfall days as compared to January, the last vestiges of winter are still strongly felt. Weather in February »

March brings a significant climb in temperatures, signifying the onset of spring. The city basks in approximately twelve daylight hours and average highs peak to 13.5°C (56.3°F). Longer daylight and ample sunshine combine to thaw the lingering winter chill, introducing consistently warmer days. Weather in March »

In Arak, April sees the dominance of warmer spring weather conditions taking hold. The city’s landscape gets significantly warmer, the temperatures recorded are bordering on 20°C (68°F). Increased daylight couples with reduced humidity level as conducive weather conditions support outdoor activities. Weather in April »

As May arrives, the summer heat begins making its presence known. The average monthly temperatures push past a warm 25°C (77°F) making the month one of the hotter periods in Arak’s annual weather calendar. Sunshine prevails across the city, mounting to a near-peak annual level of daylight hours. Weather in May »

June is marked by the unmistakable swelter of summer with the city receiving 14.4 daylight hours on average. Pacing towards the peak of summer, the monthly low temperature sprints to a warm 15.3°C (59.5°F). A sharp decline in rainfall and a drastic surge in sunshine denote the traditional summer break’s arrival. Weather in June »

July distinguishes itself as the hottest month of the year in Arak with temperatures soaring to a sizzling 35.8°C (96.4°F). Bloated absolute maximums and strong sunshine make the city experience true summer heat. Rainfall is at a bare minimum, making room for continued sun-dominated days. Weather in July »

There is a negligible dip in temperatures as August walks in, continuing the hot summer streak in Arak. It's the dry period of the year; rainfall measures are almost nonexistent, registering a humble 1mm (0.04") average. Evenings get a tad cooler and the city savors more pleasant nights as compared to the seething July nights. Weather in August »

A fresh sense of calm embodies September as the weather tends towards moderation in Arak. Cooling trends are evident and temperatures slip back to more acceptable highs of around 30°C (86°F). Despite the slight decrease in temperatures, the city is still largely sunlit with ample daylight. Weather in September »

October sets the stage for autumn in Arak with a considerable drop in temperatures. In an interplay of seasons, a high of 23°C (73.4°F) and a low of 7.8°C (46°F) reflect a season in its full swing. The color palette of the city changes, marked by the fiery hues of fall foliage. Weather in October »

November marks the transition back into cold weather for Arak. November is noticeably colder than October with temperatures falling back to 14.8°C (58.6°F). The decrease in daylight hours and reduced instances of sunshine serve as indicators to the nearing end of the year. Weather in November »

December sees the onset of freezing winter temperatures once again, with average lows dipping to a chilly -2.2°C (28°F). Accompanied by decreasing sunshine hours and increasing instances of rainfall, it signifies the onset of winter. Weather in December »