The following is a timeline of the Syrian Civil War from May to August 2019. Information about aggregated casualty counts is found at Casualties of the Syrian Civil War.
6 May
- The Syrian Arab Army launched a ground offensive against HTS and NFL-held areas in northern Hama and southern Idlib, after six days of intensive airstrikes on the region by the SyAAF and RuAF. The Syrian Government stated that the assault was provoked by increased rebel attacks on government-held areas originating from within the demilitarized zone. The Idlib-based rebel groups stated that they believed the goal of the offensive would be to capture the M4 and M5 highways in the Idlib Governorate.[4][5][6]
8 May
- Northwestern Syria offensive: Syrian Army captured the town of Kafr Nabudah after a brief battle.[14][15]
9 May
- Northwestern Syria offensive: Syrian Army captured the town of Qalaat al-Madiq as well as some surrounding villages.[16]
27 May
- The Israeli Air Force announces destroying a Syrian air defense launcher and its operator after it says an anti-aircraft missile locked onto an Israeli plane conducting a "routine flight" over northern Israel. According to Syrian media, the strike took place near Khan Arnabah, very close to the Golan Heights border. The AA missile reportedly fell within Syrian territory.[19]
29 May
- At least 14 civilians are killed in air strikes by the Syrian Government and Russian forces in Idlib.[20]
30 May
- During continuing air strikes, five civilians including women and children are killed in Idlib.[21]
15 June
- Syrian State Television report wildfires spark an explosion at an ammo depot west of Damascus.[24]
16 June
- Rebel shelling kills 12 in a rural area in northern Aleppo.[25]
20 June
- Over the past 48 hours, it is reported that 84 rebels and 41 government based troops have been killed in Hama.[26]
26 June
- The UN questions the Russian Government in relation to 23 hospitals that have been hit by attacks since the Idlib offensive began in April.[27]
12 July
On 12 July, Hezbollah announced that it was reducing its presence in Syria, stating that their presence was no longer necessary, as according to them the Syrian army had recovered.[28][29][30]
14 July
Turkish forces masses out near the Syrian border with the aim of launching an offensive east of the Euphrates.[31]
1 August
- The Syrian Government agrees to a ceasefire in Idlib on the condition that a Turkish-Russian buffer zone deal is implemented.[32]
19 August
- Syrian Air Force warplanes repeatedly strike a Turkish military convoy driving through the rebel-held region of Idlib, reportedly causing several casualties and forcing it to stop. Turkey claims the convoy was aiming to supply observation posts, while Syria accuses it of carrying weapons and ammunition to rebel groups.[35]
20 August
- The Al-Qaeda-linked faction Hayat Tahrir al-Sham (HTS) acknowledges "a redeployment" south of the strategic town of Khan Shaykhun. Pro-Government media later reports that the Syrian Army has entered the northern sector of the town following HTS withdrawal.[36]
24 August
- The Damascus airstrike was conducted by the Israeli air force on late night on Sunday of 24 August to prevent an Iranian force from launching "very imminent" drone strike on Israel.[39][40][41]
31 August
- More than 40 militants are killed by an American cruise missile strike targeting al-Qaeda-linked militants at a Huras al-Din base in Syria's rebel-held Idlib Governorate. Idlib had recently agreed a truce with the Syrian government.[42]